Page 1
2010
T. Hemery, R. Hünerbein, R. Fröhlich, S. Grimme, D. Hoppe,
Configurationally Labile Enantioenriched Lithiated 3-Arylprop-2-enyl Carbamates: Joint
Experimental and Quantum Chemical Investigations on the Equilibrium of Epimers,
J. Org. Chem. 2010, 75, 5716-5720.
S. Kollmann, E. Nauha, D. Hoppe,
Highly Stereoselective De-Novo Synthesis of Protected 2-Amino-3-C-methyl-2,3-dideoxy-D-
altrose,
Tetrahedron 2010, 66, 6162-6166.
T. Hemery, J. Becker, R. Fröhlich, D. Hoppe,
(−)-Myrtenyl N,N-Diisopropylcarbamate: Stereochemistry of Lithiation and Electrophilic
Substitution Directed by Dynamic Kinetic Diastereoisomer Resolution,
Eur. J. Org. Chem. 2010, 3711-3720.
S. Kollmann, R. Fröhlich, D. Hoppe,
Highly Stereoselective Synthesis of 2-Amino-3-C-methyl-2,3-dideoxyaldoses by C3-Chain
Elongation via Homoaldol Reaction of Sugar Aldehydes,
Synthesis 2010, 749-756.
T. Hemery, B. Wibbeling, R. Fröhlich, D. Hoppe,
Stereoselective Synthesis of Highly Substituted Annulated Dihydropyrans Based on γ-Lithiation
and Homoaldol Reaction of an Enantiopure α-Silylated Vinyl Carbamate,
Synthesis 2010, 329-342.
2009
Y.-L. Chen, D. Hoppe,
1-(N,N-Diisopropylcarbamoyloxy)-1-tosyl-1-alkenes-a2d1 Synthons via Tandem Umpolung,
J. Org. Chem. 2009, 74, 4188-4194.
Y.-L. Chen, D. Hoppe,
Copper-catalyzed asymmetric conjugate addition of Grignard reagents to 1-(N,N-diisopropyl-
carbamoyloxy)-1-tosyl-1-alkenes,
Tetrahedron: Asymmetry 2009, 20, 1561-1567.
Y.-L. Chen, R. Fröhlich, D. Hoppe,
Copper-catalyzed Asymmetric Addition of Et2Zn to 2-Cyclohexen-1-one and 2-Carbamoyloxy-2-
cyclohexen-1-one with Phosphoramidite, Phosphite, and Bidentate Phosphite-oxazoline Ligands,
Tetrahedron: Asymmetry 2009, 20, 1144-1149.
D. Hoppe,
α-Metallated O-2-Alkenyl Carbamates: Synthetic Equivalents of Chiral Homoenolates and
Materials for Asymmetric Homoaldol Reaction,
Synthesis 2009, 43-61.
Page 2
2008
E.-U. Würthwein, D. Hoppe,
Enantiotopos-Differentiating (−)-Sparteine-Mediated γ-Deprotonation of 1-Alkenyl Carbamates:
DFT Calculations Verify the Observed Stereoselectivity,
J. Org. Chem. 2008, 73, 9055-9060.
H. Lange, R. Fröhlich, D. Hoppe,
Cu(I)-Catalyzed Stereospecific Coupling Reactions of Enantioenriched α-Stannylated Benzyl
Carbamates and Their Application,
Tetrahedron 2008, 64, 9123-9135.
H. Lange, R. Hünerbein, B. Wibbeling, R. Fröhlich, S. Grimme, D. Hoppe,
Comprehensive Experimental and Theoretical Studies of Configurationally Labile Epimeric
Diamine Complexes of α−Lithiated Benzyl Carbamates,
Synthesis 2008, 2905-2918.
M. Siemer, R. Fröhlich, D. Hoppe,
Asymmetric Synthesis of 3,4-Annulated Cyclopentenones from Cycloalkenyl Ketones and Vinyl
Carbamates by Diastereoselective Carbonyl Addition/Conrotatory 4π Ring Closure,
Synthesis 2008, 2264-2270.
J. Becker, K. Bergander, R. Fröhlich, D. Hoppe,
Asymmetric Total Synthesis and X-Ray Crystal Structure of the Cytotoxic Marine Diterpene (+)-
Vigulariol,
Angew. Chem. 2008, 120, 1678-1681; Angew. Chem. Int. Ed. 2008, 47, 1654-1657.
S. Wünnemann, R. Fröhlich D. Hoppe,
Asymmetric Strecker Reaction of N-Benzhydrylimines Utilising New Tropos Biphenyldiol-Based
Ligands,
Eur. J. Org. Chem. 2008, 684-692.
H. Lange, R. Hünerbein, R. Fröhlich, S. Grimme, D. Hoppe,
Configurationally Labile Lithiated O-Benzyl Carbamates: Application in Asymmetric Synthesis and
Quantum Chemical Investigations on the Equilibrium of Diastereomers,
Chem. Asian J. 2008, 3, 78-87.
H. Lange, K. Bergander, R. Fröhlich, S. Kehr, S. Nakamura, N. Shibata, T. Toru, D. Hoppe,
Highly Enantioselective Reactions of Configurationally Labile Epimeric Diamine Complexes of
Lithiated S-Benzyl Thiocarbamates,
Chem. Asian J. 2008, 3, 88-101.
Page 3
2007
R. Otte, B. Wibbeling, R. Fröhlich, S. Nakamura, N. Shibata, T. Toru, D. Hoppe,
Asymmetric lithiation of 2-alkynyl aryl sulfides - Enantio- and diastereoselective formation of
allenyl aryl sulfides and their application in nickel-catalyzed cross-coupling reactions,
Tetrahedron Lett. 2007, 48, 8636-8642.
D. Hoppe, L. Padeken, K. Gottschalk, W. Guarnieri, R. Fröhlich,
Synthesis of (−)-N-Acetyl-slaframine by C-1, C-5 Bis-hydroxyalkylation of (S)-2-(N,N-
Dibenzylamino)-1,5-pentanediol via Highly Diastereoselective Lithiation of the Dicarbamate,
Synthesis 2007, 1984-1994.
J. Becker, R. Fröhlich, O. Kataeva, D. Hoppe,
Stereoselective Synthesis of Hexahydro-isobenzofuran-4(1H)-ones from Chiral Substituted
Cyclohex-2-enyl Carbamates via Asymmetric Homoaldol Reaction and THF Cyclocondensation,
Eur. J. Org. Chem. 2007, 3349-3364.
J. Becker, R. Fröhlich, K. Salorinne, D. Hoppe,
Asymmetric Homoaldol Reactions with Cyclohex-2-enyl N,N-Diisopropylcarbamate: Kinetic
Resolution, Elucidation of the Stereochemical Course and Applications in the Synthesis of
Hexahydroisobenzofuran-4-(1H)-ones,
Eur. J. Org. Chem. 2007, 3337-3348.
R. Bou Chedid, R. Fröhlich, B. Wibbeling, D. Hoppe,
Enantioselective γ-Deprotonation of Alkyl-Substituted O-1,3-Butadien-2-yl Carbamates and
Regioselective Asymmetric Homoaldol Reaction,
Eur. J. Org. Chem. 2007, 3179-3190.
R. P. Sonawane, C. Mück-Lichtenfeld, R. Fröhlich, K. Bergander, D. Hoppe,
Highly Diastereoselective Lithiation and Substitution of an (S)-Prolinyl Thiocarbamate via
Sterically Homogeneous Litio(thiocarbamate): Synthesis of Enantiomerically Pure Prolinethiols,
Chem. Eur. J. 2007, 1847-1854.
S. Kollmann, R. Fröhlich, D. Hoppe,
Chain-Elongation of Sugar Aldehydes by Asymmetric Homoaldol Reaction: Introduction of a
Functionalized 3-Methyl-Substituted Three-Carbon Unit,
Synthesis 2007, 883-892.
R. Bou Chedid, M. Brümmer, B. Wibbeling, R. Fröhlich, D. Hoppe,
Stereo- and Regiochemical Divergence in the Substitution of a Lithiated Alk-1-en-3-yn-2-yl
Carbamate: Synthesis of Highly Enantioenriched Vinylallenes or Alk-3-en-5-yn-1-ols,
Angew. Chem. Int. Ed. 2007, 46, 3131-3134; Angew. Chemie 2007, 119, 3192-3195.
Page 4
J. Becker, S. Grimme, R. Fröhlich, D. Hoppe,
Estimation of the Kinetic Acidity from Substrate Conformation – Stereochemical Course of the
Deprotonation of Cyclohexenyl Carbamates,
Angew.Chem. Int. Ed. 2007, 46, 1645-1649; Angew. Chem. 2007, 119, 1672-1676.
D. Hoppe,
Asymmetric Homoaldol Reactions, in Asymmetric Synthesis – The Essentials (Eds. M. Christmann,
S. Bräse), p. 100-104, Wiley-VCH, 2007.
2006
G. Christoph, C. Stratmann, I. Coldham, D. Hoppe,
Asymmetric Synthesis of 3-Hydroxy-pyrrolidines via Tin-Lithium Exchange and Cyclization,
Org. Lett. 2006, 8, 4469-4471.
R. P. Sonawane, R. Fröhlich, D. Hoppe,
Highly Enantioselective Reactions of a Lithiated α-Thioallyl Carbanion via Thermodynamic
Resolution Pathway,
Adv. Synth. Catal. 2006, 348, 1847-1854.
A. Brüns, B. Wibbeling, R. Fröhlich, D. Hoppe,
Enantio- and Diastereoselective Synthesis of Tetrahydrofurochromenes via Sequential Asymmetric
Homoaldol Reaction and a Mukaiyama-Type Tetrahydrofuran Cyclization,
Synthesis 2006, 3111-3121.
R. Kalkofen, D. Hoppe,
First Example of an Enantiospecific sp3-sp2 Stille Coupling of a Chiral Allylstannane with Aryl
Halides,
Synlett 2006, 1959-1962.
R. P. Sonawane, R. Fröhlich,
D. Hoppe, Highly Diastereoselective Formation and Reactions of a Non-Mesomerically Stabilized,
Lithiated α-Thiocarbanion,
Chem. Commun. 2006, 3101-3103.
R. Bou Chedid, R. Fröhlich, D. Hoppe,
Asymmetric γ-Deprotonation and Homoaldol Reaction of 1,3-Dien-2-yl Carbamates: Stereo- and
Regiochemistry,
Org. Lett. 2006, 8, 3061-3064.
S. Wünnemann, R. Fröhlich, D. Hoppe,
3,3’-Oxazolidinyl-Substituted 2,2’-Biphenyldiols: Novel Tropos Ligands with a Large Induction on
the Chiral Axis,
Org. Lett. 2006, 8, 2455-2458.
Page 5
M. Kauch, D. Hoppe,
Synthesis of Halogenated Phenols by Directed ortho-Lithiation and ipso-Iododesilylation Reactions
of O-Aryl N-Isopropylcarbamates,
Synthesis 2006, 1578-1590.
M. Kauch, D. Hoppe,
Efficient Two-Step Synthesis of Salicylaldehydes via Directed ortho-Lithiation of in situ N-
Silylated O-Aryl N-Isopropylcarbamates,
Synthesis 2006, 1575-1578.
2005
S. Brandau, D. Hoppe,
Asymmetric Synthesis of (2-Carbamoyloxy-1-alkenyl)cyclopropanes by Intramolecular
Cycloalkylation,
Tetrahedron 2005, 61, 12244-12255.
M. M. Martinez, D. Hoppe,
Total Synthesis of (−)-α-Kainic Acid by (−)-Sparteine-Mediated Asymmetric
Deprotonation/Cycloalkylation,
Proceedings of ECSOC-9, International Electronic Conference on Synthetic Organic Chemistry,
9th, Nov. 1-30, 2005 (2005), CD-ROM Edition, A012/1-A012/4. Publisher: Molecular Diversity
Preservation International, Basel, Switzerland.
R. Kalkofen, S. Brandau, S. Ünaldi, R. Fröhlich, D. Hoppe,
Enantio- and Diastereoselective Synthesis of Highly Substituted Acylcyclopropanes from
Homoaldol Products via Stereospecific Homoallylic Cyclization,
Eur. J. Org. Chem. 2005, 4571-4580.
S. Ünaldi, R. Fröhlich, D. Hoppe,
Synthesis of Enantioenriched and Diastereomerically Pure, cis-Fused a-Oxy-Substituted γ-Lactones
via Epoxidation of Optically Active Homoaldol Products,
Synthesis 2005, 2507-2520.
M. Özlügedik, S. Ünaldi, B. Wibbeling, D. Hoppe,
Synthesis of Enantioenriched, trans-Fused Bicyclo[4.4.0]dec-3-enes and Bicyclo[4.3.0]non-3-enes ,
Bearing a 1,5-Lactone Bridge,
Adv. Synth. Catal. 2005, 347, 1627-1631.
S. Ünaldi, M. Özlügedik, R. Fröhlich, D. Hoppe,
Diastereoselective Synthesis of Enantioenriched, Annulated Tetrahydrofurans by Simultaneous
Formation of the O-1-C-5 and the C-5-C-4 Bonds,
Adv. Synth. Catal. 2005, 347, 1621-1626.
Page 6
R. Otte, R. Fröhlich, B. Wibbeling, D. Hoppe,
Solid-State Structure and Enantioselective Reaction of a 1-Thio-Substituted Propargyllithium-(−)-
Sparteine Complex,
Angew. Chem. Int. Ed. 2005, 44, 5492-5496; Angew. Chem. 2005, 117, 5629-5632.
M. Kauch, V. Snieckus, D. Hoppe,
Substitution of Hydroxybiaryls via Directed ortho-Lithiation of O-Aryl N-Isopropyl-N-silyl-
carbamates,
J. Org. Chem. 2005, 70, 7149-7158.
S. Brandau, R. Fröhlich, D. Hoppe,
Formation of 1-Methylene-2-vinylcyclopropane by Intramolecular SE’-Cycloalkylation Reaction,
Tetrahedron Lett. 2005, 46, 6709-6711.
J. Reuber, R. Fröhlich, D. Hoppe,
Asymmetric γ-Deprotonation and Substitution Reactions of (Z)-1,3-Diphenyl-1-propenyl N,N-
Diisopropylcarbamate,
Eur. J. Org. Chem. 2005, 3017-3025.
E.-U. Würthwein, D. Hoppe,
Enantioselective Deprotonation of O-Alkyl and O-Alk-2-enyl Carbamates in the Presence of (−)-
Sparteine and (−)-α-Isosparteine. A Theoretical Study,
J. Org. Chem. 2005, 70, 4443-4451.
M. M. Martinez, D. Hoppe,
Novel Approach to the (−)-Sparteine-Mediated Synthesis of Kainoids: Total Synthesis of (−)-α-
Kainic Acid via (−)-Sparteine-Mediated Deprotonation,
Eur. J. Org. Chem. 2005, 1427-1443.
W. Zeng, R. Fröhlich, D. Hoppe,
Enantioselective, (−)-Sparteine-Mediated Deprotonation of Geranyl and Neryl N,N-
Diisopropylcarbamate: Configurational Stability of the Intermediate Lithium Compounds,
Tetrahedron 2005, 61, 3281-3287.
N. Gudimalla, R. Fröhlich, D. Hoppe,
A Simple and Practical Approach to α-Halo- and α-Phenylthio-α,β-Enones,
Synthesis 2005, 415-418.
E. Beckmann, D. Hoppe,
Synthesis of an Enantioenriched α-Carbamoyloxy-crotylboronate and its Homoaldol Reaction with
Aldehydes,
Synthesis 2005, 217-222.
Page 7
2004
E. Beckmann, V. Desai, D. Hoppe,
Stereospecific Reaction of α-Carbamoyloxy-2-alkenylboronates and α-Carbamoyloxy-
alkylboronates with Grignard Reagents − Synthesis of Highly Enantioenriched Secondary Alcohols,
Synlett 2004, 2275-2280.
N. Gudimalla, R. Fröhlich, D. Hoppe,
Stereoselective Synthesis of Baylis-Hillman-Type Adducts via Allenolates Generated by Acyl
Migration,
Org. Lett. 2004, 6, 4005-4008.
M. M. Martinez, D. Hoppe,
Enantioselective Total Synthesis of (−)-α-Kainic Acid,
Org. Lett. 2004, 6, 3743-3746.
M. Özlügedik, J. Kristensen, J. Reuber, R. Fröhlich, D. Hoppe,
Stereoselective Synthesis of Highly Substituted Bicyclic γ-Lactones Using Homoaldol Addition of
1-(1-Cycloalkenyl)methyl Carbamates,
Synthesis 2004, 2303-2316.
R. Kalkofen, S. Brandau, B. Wibbeling; D. Hoppe,
Simultaneous Enolate Generation and Hydroxy Group Activation by Acyl Migration – Synthesis of
Stereohomogeneous Cyclopropane Carboxaldehydes and Acylcyclopropanes by Cycloalkylation of
4-Hydroxy-1-alkenyl Carbamates,
Angew. Chem. 2004, 116, 6836-6838; Angew. Chem. Int. Ed. 2004, 43, 6667-6669.
M. Zimmermann, B. Wibbeling, D. Hoppe,
Synthesis of Enantiomerically and Diastereomerically Pure 4-Hydroxy-1,2-alkadienyl Carbamates
and Their Application in a Modified Nazarov Cyclization Towards Chiral Cyclopentenones,
Synthesis 2004, 765-774.
J. Reuber, R. Fröhlich, D. Hoppe,
Highly Enantioenriched Homoenolate Reagents by Asymmetric γ-Deprotonation of Achiral 1-Silyl-
Substituted 1-Alkenyl Carbamates,
Org. Lett. 2004, 6, 783-786.
M. Seppi, R. Kalkofen, J. Reupohl, R. Fröhlich, D. Hoppe,
Highly Enantiomerically Enriched Ketone Homoenolate Reagents Prepared by (−)-Sparteine-
Mediated γ-Deprotonation of Achiral 1-Alkenyl Carbamates,
Angew. Chem. Int. Ed. 2004, 43, 1423-1427; Angew. Chem. 2004, 116, 1447-1451.
Page 8
G. Christoph, D. Hoppe,
Asymmetric Deprotonation with Alkyllithium/(−)-Sparteine,
Review in The Chemistry of Functional Groups (Hrsg. Z. Rappoport, I. Marek), 2004, Interscience
Publishers, Wiley & Sons, 1058-1164.
2003
G. Gralla, B. Wibbeling, D. Hoppe,
Synthesis of 2-Alkylidene-cycloalkane-1,3-diols via Enantioselective Intramolecular
Carbolithiation,
Tetrahedron Lett. 2003, 44, 8979-8982.
F. Marr, M. Brüggemann, D. Hoppe,
Enantioselective Synthesis by Lithiation Adjacent to Oxygen and Electrophile Incorporation,
Review in Topics in Organometallic Chemistry Vol. 5 (Hrsg. D. M. Hodgson), 2003, Springer-
Verlag, p. 61-138.
C. Schultz-Fademrecht, M. Zimmermann, R. Fröhlich, D. Hoppe,
Synthesis of Enantiopure 2,5-Dihydro-3-iodofurans and Substituted 3-Iodofurans by
Iodocyclization of 4-Hydroxy-1,2-alkadienyl Carbamates,
Synlett 2003, 1969-1972.
2002
F. Marr, D. Hoppe,
Synthesis of Enantiomerically Enriched Tertiary 2-Cyclohexene-1-thiols via Configurationally
Stable α-Thio-Substituted Allyllithium Compounds,
Org. Lett. 2002, 4, 4217-4220.
F. Marr, R. Fröhlich, D. Hoppe,
Preparation of meso-1,3-Diphenylallyllithium/(−)-Sparteine Complex - Its Crystal Structure and
Reactions,
Tetrahedron: Asymmetry 2002, 13, 2587-2592.
F. Marr, R. Fröhlich, B. Wibbeling, C. Diedrich, D. Hoppe,
The Synthesis and Configurational Stability of Enantioenriched α-Thioallyllithium Compounds and
the Stereochemical Course of Their Electrophilic Substitutions,
Eur. J. Org. Chem. 2002, 2970-2988.
G. Christoph, D. Hoppe,
Asymmetric Synthesis of 2-Alkenyl-1-cyclopentanols via Tin-Lithium Exchange and
Intramolecular Cycloaddition,
Org. Lett. 2002, 4, 2189-2192.
Page 9
G. Gralla, B. Wibbeling, D. Hoppe,
Synthesis of an Ethynyl Carbamate and Application for the Enantioselective Cyclocarbolithiation,
Org. Lett. 2002, 4, 2193-2195.
C. Schultz-Fademrecht, M. A. Tius, S. Grimme, B. Wibbeling, D. Hoppe,
Synthesis of Enantioenriched 5-Alkylidene-2-cyclopentenones from Chiral Allenyl Carbamates:
Generation of a Chiral Lithium Allenolate and Allylic Activation for a Conrotatory 4π-
Electrocyclization,
Angew. Chem. 2002, 115, 1610-1612; Angew. Chem. Int. Ed. 2002, 41, 1532-1535.
J. G. Peters, M. Seppi, R. Fröhlich, B. Wibbeling, D. Hoppe,
Stereoselective Intermolecular Carbolithiation of Open-Chain and Cyclic 1-Aryl-1-alkenyl N,N-
diisopropylcarbamates Coupled with Electrocyclic Substitution. Observation of p-Carboxylation in
a Benzyllithium Derivative,
Synthesis 2002, 381-392.
M. Özlügedik, J. Kristensen, B. Wibbeling, R. Fröhlich, D. Hoppe,
Nonracemic, Chiral Homoenolate Reagents Derived from (Cycloalk-1-enyl)methyl Carbamates and
Evaluation of Their Configurational Stabilities,
Eur. J. Org. Chem. 2002, 414-427.
M. Brüggemann, R. Fröhlich, B. Wibbeling, C. Holst, D. Hoppe,
Stereoselective Formation of Quarternary Carbon Centres with Chiral 3-Sulfonyl-1,3-oxazolidines
and Titanium Enolates,
Tetrahedron 2002, 58, 312-340.
A. Deiters, C. Mück-Lichtenfeld, R. Fröhlich, D. Hoppe,
Planar-Chiral (2E,7Z)- and (2Z,7E)-Cyclonona-2,7-dien-1-yl Carbamates by Asymmetric Bis-
Allylic α,α'-Cycloalkylation - Studies on Their Conformational Stability,
Chem. Eur. J. 2002, 8, 1833-1842.
2001
D. Hoppe, B. J. Morgan, M. C. Kozlowski,
(−)-Sparteine, e-EROS Encyclopedia of Reagents for Organic Synthesis 2001.
D. Hoppe,
1-(Benzyloxymethoxy)propyllithium, e-EROS Encyclopedia of Reagents for Organic Synthesis
2001.
D. Hoppe,
(E)-1-(N,N-Diisopropylcarbamoyloxy)crotyllithium, e-EROS Encyclopedia of Reagents for Organic
Synthesis 2001.
Page 10
M. Kauch, D. Hoppe,
Synthesis of Substituted Phenols by Directed ortho-Lithiation of in situ N-Silyl-Protected O-Aryl-
N-monoalkylcarbamates,
Can. J. Chem. 2001, 79, 1736-1746.
M. Oestreich, D. Hoppe,
Stereospecific Preparation of Highly Enantiomerically Enriched Organomagnesium Reagents,
Chemtracts - Organic Chemistry 2001, 14, 100-105.
A. Deiters, D. Hoppe,
Asymmetric Synthesis of cis-1,2-Dialkenyl-Substituted Cyclopentanes via (−)-Sparteine-Mediated
Lithiation and Cycloalkylation of a 9-Chloro-2,7-nonadienyl Carbamate,
J. Org. Chem. 2001, 66, 2842-2849 .
C. Schultz-Fademrecht, B. Wibbeling, R. Fröhlich, D. Hoppe,
Synthesis of Enantiomerically Enriched Allenes by (−)-Sparteine-Mediated Lithiation of Alkynyl
Carbamates,
Org. Lett. 2001, 3, 1221-1224.
H. Laqua, R. Fröhlich, B. Wibbeling, D. Hoppe,
Synthesis of Enantioenriched Indene-Derived Bicyclic Alcohols and Tricyclic Cyclopropanes via
(−)-Sparteine-Mediated Lithiation of a Racemic Precursor and Kinetic Resolution During the
Cyclocarbolithiation,
J. Organomet. Chem. 2001, 96-104.
A. Deiters, B. Wibbeling, D. Hoppe,
Enantio- and Diastereoselective Synthesis of a 3,4-Divinylpyrrolidine via Asymmetric
Deprotonation and Cyclization of a 9-Chloro-5-aza-2,7-nonadiene,
Adv. Synth. Catal. 2001, 181-183.
M. Brüggemann, C. Holst, D. Hoppe,
First Enantioselective Total Synthesis of Both (+)- and (−)-Metachromin A,
Eur. J. Org. Chem. 2001, 647-654.
O. Stratmann, B. Kaiser, R. Fröhlich, O. Meyer, D. Hoppe,
Configurational Stability of an Enantioenriched α-Thiobenzyllithium Derivative and
Stereochemical Course of Its Electrophilic Substitution Reactions. Synthesis of Enantiomerically
Pure Tertiary Benzylic Thiols,
Chem. Eur. J. 2001, 423-435.
Page 11
2000
O. Stratmann, D. Hoppe, R. Fröhlich,
Synthesis and Structure of Highly Enantio- and Diastereoenriched 1-Aza-4-oxa-7-
thiabcyclo[3.3.0]octan-8-ones Derived from Acyl-Substituted S-Benzyl Thiocarbamates,
J. Prakt. Chem. 2000, 342, 828-831.
A. Kreier, R. Fröhlich, E. Wegelius, D. Hoppe,
Asymmetric Synthesis of Stereodefined 7-(Alk-1-enyl)-5,6,7,8-tetrahydronaphthalene-2-carboxylic
Acids and Their Precursors, Bearing a Polar Group in 8-Position, by the 3-Sulfonyl-1,3-oxazolidine
Method,
Synthesis 2000, 1391-1402.
A. Deiters, R. Fröhlich, D. Hoppe,
Enantioselective Synthesis of Functionalized 1,5-Cyclononadienes by Intramolecular
Cycloalkylation by Means of α,α-Diallylcoupling,
Angew. Chem. 2000, 112, 2189-2192; Angew. Chem. Int. Ed. Engl. 2000, 39, 2105-2107.
A. Deiters, C. Mück-Lichtenfeld, R. Fröhlich, D. Hoppe,
Asymmetric Synthesis of a (2Z,7E)-Cyclononadiene by an Intramolecular Cycloalkylation and
Insights to Its Conformational Properties,
Org. Lett. 2000, 2, 2415-2418.
D. Heimbach, R. Fröhlich, B. Wibbeling, D. Hoppe,
Asymmetric Lithiation of an Allyl Carbamate by an Complexing Remote Chiral Substituent,
Synlett 2000, 950-954.
K. R. K. Prasad, D. Hoppe,
Applications of Homoallylic Alcohols Derived from (−)-Sparteine-Mediated Asymmetric
Homoaldolization: Entry to 5- to 8-Membered Oxacycles through Metathesis Reaction,
Synlett 2000, 1067-1069.
F. Steif, B. Wibbeling, O. Meyer, D. Hoppe,
Enantio- and Diastereoselective Synthesis of (Protected) 2-Formyl- and 2-(Hydroxymethyl)-1-
phenyl-1,3-alkanediols from Chiral 2-Methoxy-3-tosyl-1,3-oxazolidines by Subsequent
Asymmetric Formylation and Aldolization,
Synthesis 2000, 743-753.
C. Redecker, U. Altrup, D. Hoppe, R. Düsing, E.-J. Speckmann,
Effects of Valproate Derivatives: I. Antiepileptic Efficacy of Amides, Structural Analogs and
Esters,
Neuropharmacology 2000, 39, 254-266.
Page 12
C. Redecker, U. Altrup, D. Hoppe, T. Hense, A. Kreier, A. Rabe, R. Düsing, E.-J. Speckmann,
Effects of Valproate Derivatives: II. Antiepileptic Efficacy in Relation to Chemical Structures of
Valproate Sugar Esters,
Neuropharmacology 2000, 39, 267-281.
1999
M. Oestreich, D. Hoppe,
(−)-Sparteine-Mediated Stereoselective Intramolecular Conjugate Addition Reactions of Dienes and
Enynes,
Tetrahedron Lett. 1999, 40, 1881-1884.
A. Deiters, D. Hoppe,
Chiral Induction by Elimination-Coupled Lithium-Ene Reaction: Synthesis of (+)-(3R, 4R)-1,2-
Dihydromultifidene,
Angew. Chem. 1999, 111, 529-532; Angew. Chem. Int. Ed. Engl. 1999, 38, 546-548.
J. van Bebber, H. Ahrens, R. Fröhlich, D. Hoppe,
Efficient Desymmetrization of meso-cis-1,2-Cyclohexanedimethanol with Differentiation between
Diastereotopic and Enantiotopie C-H Bonds by (−)-Sparteine-Mediated Deprotonation,
Chem. Eur. J. 1999, 5, 1905-1916.
J. Schwerdtfeger, S. Kolczewski, B. Weber, R. Fröhlich, D. Hoppe,
Stereoselective Deprotonation of Chiral and Achiral 2-Aminoalkyl Carbamates. Synthesis of
Optically Active β-Aminoalkanols via 1-Oxy-Substituted Alkyllithium Intermediates,
Synthesis 1999, 1573-1592.
B. Weber, S. Kolczewski, R. Fröhlich, D. Hoppe,
Facile and Highly Stereoselective Synthesis of the C2-Symmetrical Diamino Diol Core-Unit of
HIV-1 Protease Inhibitors and of Their Symmetrical and Unsymmetrical Analogues from Lithiated
2-(Dibenzylamino)alkyl Carbamates Oxidative Dimerization,
Synthesis 1999, 1593-1606.
E.-U. Würthwein, K. Behrens, D. Hoppe,
Enantioselective Deprotonation of Alkyl Carbamates by Means of (R,R)-1,2-Bis(N,N-
dimethylamino)cyclohexane/sec-Butyllithium - Theory and Experiment,
Chem. Eur. J. 1999, 5, 3459-3463.
T. Heinl, S. Retzow, D. Hoppe, G. Fraenkel, A. Chow,
Experimental and Theoretical Investigations of Lithio-Indenyl Carbamate/(–)-Sparteine and (–)-α-
Isosparteine Complexes,
Chem. Eur. J. 1999, 5, 3464-3470.
Page 13
B. Weber, J. Schwerdtfeger, R. Fröhlich, A. Göhrt, D. Hoppe,
Diastereoselective Lithiation and Substitution of (S)-N-Benzylprolinol and rac-N-Benzylpiperidine-
2-methanol via the Carbamate Esters. Kinetic Resolution by means of (−)-Sparteine-mediated
Deprotonation,
Synthesis 1999, 1915-1924.
C. Derwing, H. Frank, D. Hoppe,
Chiral Benzyllithium Compounds: High Configurative Stability of (R)- and (S)-1-Lithioindan-1-yl
N,N-Diisopropylcarbamate and Unexpected Stereochemical Course of the Substitution Reactions,
Eur. J. Org. Chem. 1999, 3519-3524.
D. Hoppe, M. J. Woltering, M. Oestreich, R. Fröhlich, (−)-Sparteine-mediated Asymmetric
Intramolecular Carbolithiation of Alkenes – Synthesis of Enantiopure Cyclopentanes with Three
Consecutive Stereogenic Centers, Helv. Chim. Acta 1999, 82, 1860-1877.
M. Oestreich, R. Fröhlich, D. Hoppe,
(−)-Sparteine-mediated Stereoselective Intramolecular Carbolithiation of 4-Substituted 5-Hexynyl
Carbamates. Synthesis of Enantiopure 1,3-Difunctionalized Alkylidene Cyclopentanes,
J. Org. Chem. 1999, 64, 8616-8626.
S. H. Kleinfeld, E. Wegelius, D. Hoppe,
(−)-Sparteine-Mediated Asymmetric Cyclocarbolithiation of Alkenes Combined with a
Stereospecific Retro-[1,4]-Brook-Rearrangement,
Helv. Chim. Acta, 1999, 82, 2413-2424.
F. Marr, R. Fröhlich, D. Hoppe,
A Highly Enantioenriched, Configurationally Stable α-Thioallyllithium Compound and the
Stereochemical Course of Its Electrophilic Alkylation,
Org. Lett. 1999, 1, 2081-2084.
1998
M. Oestreich, R. Fröhlich, D. Hoppe,
(−)-Sparteine-Mediated Stereoselective Intramolecular Carbolithiation of Alkynes,
Tetrahedron Lett. 1998, 39, 1745-1748.
M. J. Woltering, R. Fröhlich, B. Wibbeling, D. Hoppe,
Stereoselective Synthesis of Hydroxylated Indolizidines via (−)-Sparteine Mediated Kinetic
Resolution Coupled with Intramolecular Carbolithiation,
Synlett 1998, 797-800.
E. Winter, D. Hoppe,
A New Route to the Asymmetric Synthesis of (−)-Malyngolide and (−)-epi-Malyngolide Using N-
Sulfonyl-1,3-oxazolidines as Chiral Auxiliaries,
Tetrahedron 1998, 54, 10329-10338.
Page 14
W. Guarnieri, M. Sendzik, R. Fröhlich, D. Hoppe,
Regio- and Stereoselective Lithiation and C-Substitution of (S)-2-(Dibenzyl-amino)butane-1,4-diol
via Dicarbamates,
Synthesis 1998, 1274-1286.
M. Sendzik, W. Guarnieri, D. Hoppe,
Monocarbamates, Derived from (S)-2-Dibenzylamino)-1,4-diol, and the Influence of the Second O-
Protecting Group on the Regioselectivity of Deprotonation – Application to the Synthesis of the
Boletus Toxin (2S,4S)-γ-Hydroxy-norvaline,
Synthesis 1998, 1287-1297.
K. Behrens, R. Fröhlich, O. Meyer, D. Hoppe,
Enantioselective Lithiation and Substitution of (E)-Cinnamyl N,N-Diisopropyl-carbamate through
Use of (−)-Sparteine Complexes,
Eur. J. Org. Chem. 1998, 2397-2403.
1997
C. Boie, D. Hoppe,
Stereoselective Synthesis of Enantiopure β-Amino Alcohols via Nucleophilic β-Amino-α-
hydroxyalkylation by Means of 1-Lithiated 2-[N-(Diphenyl-methyleneamino)]alkyl Carbamates,
Synthesis 1997, 176-182.
D. Hoppe, P. Tebben, M. Reggelin, M. Bolte,
Highly Diastereoselective, Nucleophilic Alkenoylation of Enantiopure α-Oxy- and α-
Aminoalkanals by Lithiated [1-(p-Toluenesulfonyl)alk-2-enyl] Carbamates. Revision of the
Stereochemistry and Application to the Synthesis of a Dihydroxyethylene Dipeptide Isostere,
Synthesis 1997, 183-190.
M. J. Woltering, R. Fröhlich, D. Hoppe,
Synthesis of Enantio- and Diastereopure Cyclopentanols by Asymmetric Cyclocarbolithiation of 5-
Alkenyl Carbamates,
Angew. Chem. 1997, 109, 1804-1805; Angew. Chem. Int. Ed. Engl. 1997, 36, 1764-1766.
D. Hoppe, B. Kaiser, O. Stratmann, R. Fröhlich,
A Highly Enantiomerically Enriched α-Thiobenzyllithium Derivative with Unusual Configurational
Stability,
Angew. Chem. 1997, 109, 2872-2874, Angew. Chem. Int. Ed. Engl. 1997, 36, 2784-2786.
D. Hoppe, T. Hense,
Convenient Synthesis of Enantiomerically Enriched β-Cyclopropyl-alaninol Derivatives by Kinetic
Resolution via (−)-Sparteine-Mediated Deprotonation,
Synthesis 1997, 1394-1398.
Page 15
D. Hoppe, T. Hense,
Enantioselective Synthesis with Lithium/(−)-Sparteine Carbanion-Pairs (Review),
Angew. Chem. 1997, 109, 2376-2410; Angew. Chem. Int. Ed. Engl. 1997, 36, 2282-2316.
D. Hoppe, The Grignard Reagent from 2-Bromomethyl-1,3-dioxolane, a Novel and Efficient d2-
Reagent: Synthesis of Branched-Chain Carbohydrate Derivatives, Chemtracts, Org. Chem. 1997,
10, 545-549.
D. Hoppe,
Generation and Reactions of Chiral, Mesomerically Stabilized Lithium Carbanions in New
Horizons in Organic Synthesis (Eds.: V. Nair, S. Kumar), New Age International Publishers, New
Delhi 1997, pp. 130-145.
1996
O. Prien, D. Hoppe,
Simple Synthesis of Enantiomerically Pure, Protected cis-Bicyclo[4.4.0]decane-1-carboxaldehyde
Derivatives from Cyclohexanones by the 3-Arenesulfonyloxazolidine Route,
Synthesis 1996, 25-27.
H. Paulsen, C. Graeve, D. Hoppe,
Convenient Synthesis of Enantiomerically Enriched (Oxybutenyl)stannanes and Their Lewis Acid
Catalyzed Homoaldol Reactions,
Synthesis 1996, 141-144.
H. Paulsen, C. Graeve, R. Fröhlich, D. Hoppe,
Enantioselective Synthesis of Bicyclic Tetrahydrofuran Carboxaldehydes from Chiral 3-Stannylbut-
1-enyl Carbamates by Tandem Homoaldol/Aldol Reaction,
Synthesis 1996, 145-148.
C. Derwing, D. Hoppe,
Synthesis of Enantioenriched Tertiary Benzylic Alcohols via Stereospecific Lithiation of Secondary
Benzyl Carbamates - Design of Dialkylcarbamates, Cleavable under Basic, Mild Conditions,
Synthesis 1996, 149-154.
J. Haller, T. Hense, D. Hoppe,
Experimental and Theoretical Studies of the Internal Stereodifferentiation Occuring During the
Lithiation of β-Stereogenic Alkyl Carbamates. Kinetic Resolutions by (−)-Sparteine-Mediated
Deprotonation,
Liebigs Ann. 1996, 489-500.
D. Hoppe, H. Ahrens, W. Guarnieri, H. Helmke, S. Kolczewski,
Heteroatom-Directed Lithiations of Chiral Alkyl Carbamates: a Powerful Tool for Enantioselective
Synthesis,
Pure Appl. Chem. 1996, 68, 613-618.
Page 16
I. Hoppe, D. Hoppe, M. Marsch, K. Harms, G. Boche,
Crystal structure of (1R)-1-methyl-1-(α-methylbenzyl-carboxamido)-indene, C19H19NO,
Z. Kristallographie 1996, 211, 331-332.
T. Bach, D. Hoppe,
Differentiation of Enantiotopic Double Bonds by a Chiral Diene,
Chemtracts, Org. Chem. 1996, 9, 93-97.
1995
B. Kaiser, D. Hoppe,
Preparation and Detection of Enantiomerically Enriched and Configurationally Stable α-
Thioalkyllithium Compounds,
Angew. Chem. 1995, 107, 344-346; Angew. Chem. Int. Ed. Engl. 1995, 34, 323-325.
H. Helmke, D. Hoppe,
Chelation-Directed Asymmetric Lithiation and C-Substitution of 1,2,4-Butanetriol Acetonide,
Synlett 1995, 978-980.
I. Hoppe, M. Marsch, K. Harms, G. Boche, D. Hoppe,
Generation of Enantiomerically Enriched Lithium Indenides by Means of (−)-Sparteine: Structure,
Stereoselective Substitution, and Solvent Effects,
Angew. Chem. 1995, 107, 2328-2330, Angew. Chem. Int. Engl. 1995, 34, 2158-2160.
D. Hoppe,
Formation of C-C Bonds by Addition of Benzyl-Type Organometallic Compounds to Carbonyl
Groups,
in Houben-Weyl, Stereoselective Synthesis (Eds.: G. Helmchen, R. W. Hoffmann, J. Mulzer, E.
Schaumann), Bd. E 21b, Thieme-Verlag, Stuttgart 1995, 1335-1355.
D. Hoppe,
Formation of C-C Bonds by Addition of Allyl-Type Organometallic Compounds to Carbonyl
Compounds. General Aspects,
in Houben-Weyl, Stereoselective Synthesis (Eds.: G. Helmchen, R. W. Hoffmann, J. Mulzer, E.
Schaumann), Bd. E 21b, Thieme-Verlag, Stuttgart 1995, 1357-1379.
D. Hoppe,
Formation of C-C Bonds by Addition of Allyl-Type Organometallic Compounds to Carbonyl
Compounds. Allyl Alkali Metal Reagents (M = Li, Na, K),
in Houben-Weyl, Stereoselective Synthesis (Eds.: G. Helmchen, R. W. Hoffmann, J. Mulzer, E.
Schaumann), Bd. E 21b, Thieme-Verlag, Stuttgart 1995, 1379-1400.
Page 17
D. Hoppe,
Formation of C-C Bonds by Addition of Allyl-Type Organometallic Compounds to Carbonyl
Compounds. Allylmagnesium Reagents,
in Houben-Weyl, Stereoselective Synthesis (Eds.: G. Helmchen, R. W. Hoffmann, J. Mulzer, E.
Schaumann), Bd. E 21b, Thieme-Verlag, Stuttgart 1995, 1401-1409.
D. Hoppe,
Formation of C-C Bonds by Addition of Allyl-Type Organometallic Compounds to Carbonyl
Compounds. Allylzinc and Allylcadmium Reagents,
in Houben-Weyl, Stereoselective Synthesis (Eds.: G. Helmchen, R. W. Hoffmann, J. Mulzer, E.
Schaumann), Bd. E 21b, Thieme-Verlag, Stuttgart 1995, 1541-1550.
D. Hoppe,
Formation of C-C Bonds by Addition of Allyl-Type Organometallic Compounds to Carbonyl
Compounds, Allyltitanium and Allylzirconium Reagents,
in Houben-Weyl, Stereoselective Synthesis (Eds.: G. Helmchen, R. W. Hoffmann, J. Mulzer, E.
Schaumann), Bd. E 21b, Thieme-Verlag, Stuttgart 1995, 1551-1583.
D. Hoppe,
Formation of C-C Bonds by Addition of Allyl-Type Organometallic Compounds to Carbonyl
Compounds. Allylchromium Reagents,
in Houben-Weyl, Stereoselective Synthesis (Eds.: G. Helmchen, R. W. Hoffmann, J. Mulzer, E.
Schaumann), Bd. E 21b, Thieme-Verlag, Stuttgart 1995, 1584-1595.
D. Hoppe,
Formation of C-C Bonds by Addition of Allyl-Type Organometallic Compounds to Carbonyl
Compounds. Allylmolybdenum Reagents,
in Houben-Weyl, Stereoselective Synthesis (Eds.: G. Helmchen, R. W. Hoffmann, J. Mulzer, E.
Schaumann), Bd. E 21b, Thieme-Verlag, Stuttgart 1995, 1596-1601.
D. Hoppe,
1-(Benzyloxymethoxy)propyllithium,
in Encyclopedia of Reagents for Organic Synthesis (Ed.: L. A. Paquette), Bd. 1, Wiley, Chichester
1995, 362-365.
D. Hoppe,
(E)-1-(N,N-Diisopropylcarbamoyloxy)lithium,
in Encyclopedia of Reagents for Organic Synthesis (Ed.: L. A. Paquette), Bd. 2, Wiley, Chichester
1995, 1927-1929.
D. Hoppe,
(−)-Sparteine,
in Encyclopedia of Reagents for Organic Synthesis (Eds.: L. A. Paquette), Bd. 7, Wiley, Chichester
1995, 4662-4664.
Page 18
1994
D. Hoppe, F. Hintze, P. Tebben, M. Paetow, H. Ahrens, J. Schwerdtfeger, P. Sommerfeld, J. Haller,
W. Guarnieri, S. Kolczewski, T. Hense, I. Hoppe,
Enantioselective Synthesis via Sparteine-Induced Asymmetric Deprotonation,
Pure Appl. Chem. 1994, 66, 1479-1486.
A. Carstens, D. Hoppe,
Generation of a Configurationally Stable, Enantioenriched α-Oxy-α-methyl-benzyllithium:
Stereodivergence of Its Electrophilic Substitution,
Tetrahedron 1994, 50, 6097-6108.
T. Harder, T. Löhl, M. Bolte, K. Wagner, D. Hoppe,
Enantioselective Synthesis of α-Branched α-Hydroxy Ketones via Chiral N-Sulfonyl-2-alkyl-2-
cyano-1,3-oxazolidines,
Tetrahedron Lett. 1994, 40, 7365-7368.
W. Guarnieri, M. Grehl, D. Hoppe,
Regio- and Stereoselective Electrophilic C-Substituion of 2-(N,N-Dibenzylamino)-1,ϖ-alkanediols
by Lithiation of the Their Carbamates,
Angew. Chem. Int. Ed. Engl. 1994, 33, 1734-1737; Angew. Chem. 1994, 106, 1815-1818.
M. Paetow, M. Kotthaus, M. Grehl, R. Fröhlich, D. Hoppe,
Enantioselective Cyclopropane Synthesis. Stereodivergent Courses of the 1,3-Elimination Reaction,
Dependent on the Lewis Acid,
Synlett 1994, 12, 1034-1036.
O. Prien, H. Hoffmann, K. Conde-Frieboes, T. Krettek, B. Berger, K. Wagner, M. Bolte, D. Hoppe,
Synthesis of Highyl Functionalized, Enantiomerically and Diastereomerically Pure Cyclohexane
Derivates via Michael Addition of Chiral 3-Tosyl-2-(2-oxo-alkyl)-1,3-oxazolidines and Methyl
Vinyl Ketone,
Synthesis 1994, 1313-1321.
1993
D. Hoppe, M. Paetow, F. Hintze,
Stereodivergent Enantioselective Synthesis by Exploiting Unusually Large Kinetic H/D Isotope
Effects on Deprotonation,
Angew. Chem. Int. Ed. Engl. 1993, 32, 394-396; Angew. Chem. 1993, 105, 430-432.
J. Haller, T. Hense, D. Hoppe,
Kinetic Resolution of β-Stereogenic O-Alkyl Carbamates by (−)-Sparteine-Assisted Deprotonation.
External versus Internal Chiral Induction,
Synlett 1993, 726-728.
Page 19
H. Hoffmann, M. Bolte, B. Berger, D. Hoppe,
Asymmetric Synthesis of cis-Hydrindanediones by Diels-Alder Reaction of Cyclopentenones
Bearing a 3-Sulfonyl-1,3-Oxazolidine Ring as Chiral Auxiliary,
Tetrahedron Lett. 1993, 34, 6537-6540.
K. Conde-Frieboes, T. Harder, D. Aulbert, C. Strahringer, M. Bolte, D. Hoppe,
Convenient Preparation of Stereochemically Homogeneous 2-Acyl-3-sulfonyl-1,3-oxazolidines and
Diastereoselective Grignard Additons to Form Protected Enantiopure 2-Hydroxyalkanals,
Synlett 1993, 921-923.
1992
B. Peschke, J. Lüßmann, M. Dyrbusch, D. Hoppe,
Diastereo- and Enantioselective Synthesis of 1,2:5,6-Diepoxy-4-hydroxyalkyl Carbamates.
Regioselective Ring Opening and Their Transformation into Doubly C-Branched Deoxy Sugar
Analogues,
Chem. Ber. 1992, 125, 1421-1430.
F. Rehders, D. Hoppe,
Synthesis of Dihydroxyethylene Isosteres of Dipeptides. 1. Enantiomerically and
Diastereomerically Pure 2-Alkyl-5-amino-3-(dimethylphenylsilyl)-4-octanolides from (S)-N,N-
Dibenzylleucinal,
Synthesis 1992, 859-864.
F. Rehders, D. Hoppe,
Synthesis of Dihydroxyethylene Isosteres of Dipeptides; 2. Isosteres of Leu-Ala and Leu-Val from
Suitably Substituted 3-Dimethylphenylsilyl-4-octanolides,
Synthesis 1992, 865-870.
O. Zschage, D. Hoppe,
Sparteine Complexes of Lithiated Primary O-2-Alkenyl Carbamates. Stereochemistry of the
Lithium-Titanium Exchange and Application for the Synthesis of Enantiomerically Enriched γ-
Lactones,
Tetrahedron 1992, 48, 5657-5666.
H. Paulsen, D. Hoppe,
Synthesis of the Insect Pheromone (+)-Eldanolide by Enantioselective Homoaldol Reaction,
Tetrahedron 1992, 48, 5667-5670.
O. Zschage, J.-R. Schwark, T. Krämer, D. Hoppe,
Enantiomerically Enriched 1-(N,N-Diisopropylcarbamoyloxy)-1,3-dimethyl-allyllithium:
Stereochemistry of the Stannylation, Titanation, and the Homoaldol Reaction,
Tetrahedron 1992, 48, 8377-8388.
Page 20
O. Zschage, D. Hoppe,
1-(N,N-Diisopropropylcarbamoyloxy)-1,3-dimethylallyllithium/(−)-Sparteine: Stereochemistry of
the Enantioselective Carboxylation and Methoxycarbonylation,
Tetrahedron 1992, 48, 8389-8392.
K. Conde-Frieboes, D. Hoppe,
Norpseudoephedrine-Derived 2-Methoxy-3-sulfonyl-1,3-oxazolidines: Chiral, Highly
Diastereoselective Formyl Cation Equivalents,
Tetrahedron 1992, 48, 6011-6020.
M. Paetow, H. Ahrens, D. Hoppe,
Chiral α,ω Dioxy-Carbanions from 1,3-Propanediol and 1,4-Butanediol by Sparteine-Assisted
Deprotonation. Enantioselective Synthesis of 1,3- and 1,4-Diols, (R)-Pantolactone, and a
Cyclopropane,
Tetrahedron Lett. 1992, 33, 5323-5326.
H. Ahrens, M. Paetow, D. Hoppe,
Stereoselective Generation of 1,3- and 1,4-Dioxy-Substituted Carbanions by Sparteine-Assisted
Deprotonation of Chiral Precursors: Substrate or Reagent Control in the Synthesis of α,γ- and α,δ-
Diols, Tetrahedron Lett. 1992, 33, 5327-5330.
P. Sommerfeld, D. Hoppe,
Enantioselective Generation of 3-Amino-1-oxy-substituted Carbanions by Sparteine-Induced
Deprotonation. Asymmetric Synthesis of 3-Hydroxy-alkylamines,
Synlett 1992, 764-766.
F. Hintze, D. Hoppe,
Enantioselective Synthesis of (S)-2-Tridecyl Acetate, a Pheromone of Drosophila mulleri, via (−)-
Sparteine-Assisted Deprotonation of 1-Dodecanol,
Synthesis 1992, 1216-1218.
J. Schwerdtfeger, D. Hoppe,
Stereoselective Generation of 1-Acyloxy-2-amino Carbanions by Deprotonation. Synthesis of
Enantiomerically and Diastereomerically Pure β-Amino Alcohols,
Angew. Chem. Int. Ed. Engl. 1992, 31, 1505-1507; Angew. Chem. 1992, 104, 1547-1549.
G. Boche, F. Haller, K. Harms, D. Hoppe, W. Koch, J. Lorenz, M. Marsch, A. Opel, L. Tümmler,
O. Zschage,
Crystal Structure and Reactivity of Oxygen (Aryloxy; Carbamoyloxy; Silyloxy)-Substituted
Lithium Compounds,
in New Aspects of Organic Chemistry II, S. 159 - 179, Kodansha 1992.
Page 21
1991
S. Dreller, M. Dyrbusch, D. Hoppe,
Synthesis of Enantiomerically Enriched Allenes via Chiral, Configurationally Stable 1-Lithio-2-
alkynyl Carbamates,
Synlett 1991, 397-400.
U. Behrens, C. Wolff, D. Hoppe,
Stereoselective Synthesis of Alkyl α-(1,3-Alkadien-2-yl)acetates and -propionates by Allene
Claisen Rearrangement,
Synthesis 1991, 644-646.
M. Marsch, K. Harms, O. Zschage, D. Hoppe, G. Boche,
h-1-(1S, 2E)-1-(N,N-diisopropylcarbamoyloxy)- 3-trimethylsilylallyllithium(bond)-Sparteine:
Structure of a Chiral, Carbamoyloxy-substituted Allyllithium Compound,
Angew. Chem. Int. Ed. Engl. 1991, 30, 321-323; Angew. Chem. 1991, 103, 338-340.
R. Hanko, K. Rabe, R. Dally, D. Hoppe,
Stereoselective Synthesis of Cyclic Dipeptide Hydroxyalkyl Isosteres via Metalated N,N-
Dialkylcarbamate 2-Alkenyl Esters,
Angew. Chem. Int. Ed. Engl. 1991, 30, 1690-1693; Angew. Chem. 1991, 103, 1725-1728.
I. Hoppe, H. Hoffmann, I. Gärtner, T. Krettek, D. Hoppe,
Diastereoselective Synthesis of Enantiomerically Pure 3-Organosulfonyl-2-(2-oxocycloalkyl)-1,3-
oxazolidines from 2-Formylcycloalkanones and β-Aminoalkanols,
Synthesis 1991, 1157-1162.
1990
O. Zschage, J.-R. Schwark, D. Hoppe,
Preparation of an Enantiomerically Enriched Allyllithium Derivative by Deprotonation with Kinetic
Resolution of Enantiomers,
Angew. Chem. Int. Ed. Engl. 1990, 29, 296-298; Angew. Chem. 1990, 102, 336-337.
K. Conde-Frieboes, D. Hoppe,
Synthesis of Enantiomerically Pure 2,4-trans-Substituted 3-Arenesulfonyl-1,3-oxazolidines by
Lewis Acid Mediated Substitution of the 2-Methoxy-Derivatives and their Epimerization,
Synlett 1990, 99-102.
J.-R. Schwark, D. Hoppe,
Synthesis of Enantiomerically Pure 1-Methyl-2-alkenyl N,N-Diisopropyl-carbamates from (S)- or
(R)-Lactates,
Synthesis 1990, 291-294.
Page 22
D. Hoppe, A. Carstens, T. Krämer,
Generation of a Configurationally Stable Chiral Benzyllithium Derivative, and the Capricious
Stereochemistry of Its Electrophilic Substitution,
Angew. Chem. Int. Ed. Engl. 1990, 29, 1424-1425; Angew. Chem. 1990, 102, 1455-1456.
D. Hoppe, F. Hintze, P. Tebben,
Chiral Lithium-1-oxyalkanides by Asymmetric Deprotonation; Enantioselective Synthesis of 2-
Hydroxyalkanoic Acids and Secondary Alcohols,
Angew. Chem. Int. Ed. Engl. 1990, 29, 1422-1424; Angew. Chem. 1990, 102, 1457-1459.
D. Hoppe, T. Krämer, J.-R. Schwark, O. Zschage,
Metallated 2-alkenyl carbamates: chiral homoenolate reagents for asymmetric synthesis,
Pure Appl. Chem. 1990, 62, 1999-2006.
D. Hoppe, O. Zschage,
Chiral Metallated Carbamates: Tools for New Strategies in Asymmetric Synthesis,
Hrsg. K. H. Dötz; R. W. Hoffmann, in Organic Synthesis via Organometallics, pp. 267-283,
Vieweg-Verlag 1990.
I. Hoppe, D. Hoppe, R. Herbst-Irmer, E. Egert,
Asymmetric Aldol Addition Reactions of a Chiral 3-Sulfonyl-1,3-oxazolidine-Masked Lithium 2-
Formylcyclohexanone Enolate,
Tetrahedron Lett. 1990, 31, 6859-6862.
1989
I. Hoppe, D. Hoppe, C. Wolff, E. Egert, R. Herbst,
3-Arylsulfonyloxazolidines as Chiral Templates; Asymmetric Synthesis of 2-Substituted 2-
Hydroxycyclohexanecarbaldehydes from 2-Hydroxymethylenecyclohexanone,
Angew. Chem. Int. Ed. Engl. 1989, 28, 67-69; Angew. Chem. 1989, 101, 65-67.
D. Hoppe, O. Zschage,
Asymmetric Homoaldol Reaction by Enantioselective Lithiation of a Prochiral 2-Butenyl
Carbamate;
Angew. Chem. Int. Ed. Engl. 1989, 28, 69-71; Angew. Chem. 1989, 101, 67-69.
D. Hoppe, G. Tarara, M. Wilckens,
Enantiomerically Pure 1-(Carbamoyloxy)oxiranes and its Utility in the Synthesis of D- and L-3,6-
Dideoxy-3-C-methyl-hexofuranosides via the Homoaldol Reaction,
Synthesis 1989, 83-88.
G. Tarara, D. Hoppe,
Total Synthesis of Protected D-altro- and D-galacto-3,6-Dideoxy-3-C-methyl-aldohexoses; Key
Intermediates of a Rifamycin S Synthesis,
Synthesis 1989, 89-92.
Page 23
D. Hoppe,
Asymmetric Allylation of Aldehydes Mediated by D-Glucose-Derived Titanium Reagents,
Chemtracts: Organic Chemistry 1989, 2, 353-357.
D. Hoppe, H. Schmincke, H.-W. Kleemann,
Studies Toward the Total Synthesis of 1-Oxacephalosporins 1: 3-Amino-4-thio-2-azetidinones with
Protected γ,γ'-Dihydroxyalkenoate Side Chain,
Tetrahedron 1989, 45, 687-694.
D. Hoppe, H. Schmincke, H.-W. Kleemann,
Studies Toward the Total Synthesis of 1-Oxacephalosporins 2: Synthesis and Reactions of
Oxazolinoazetidinones Bearing a γ,γ'-Bisoxygen-functionalized β-Methylbutenoate Side Chain,
Tetrahedron 1989, 45, 695-699.
H. Schmincke, D. Hoppe,
Studies Toward the Total Synthesis of 1-Oxacephalosporins 3: Synthesis of a (±)-trans-7-
Benzoylamino-3-carbamoyloxymethyl-1-oxa-3-cephem-3-carboxylate from 1,3-Dihydroxyacetone,
Tetrahedron 1989, 45, 701-707.
M. Reggelin, P. Tebben, D. Hoppe,
Synthesis and Deprotonation of 1-(p-Toluenesulfonyl)-2-alkenyl Carbamates. Dichotomous Achiral
d1 and Chiral d
3 Reagents for Carbonyl Additions Directed by Metal Exchange,
Tetrahedron Lett. 1989, 30, 2915-2918.
P. Tebben, M. Reggelin, D. Hoppe,
Enantiomerically Pure α',β'-Difunctionalized Enones by Highly Diastereoselective Nucleophilic
Alkenoylation of Chiral Aldehydes,
Tetrahedron Lett. 1989, 30, 2919-2922.
D. Hoppe, T. Krämer, C. Freire Erdbrügger, E. Egert,
Synthesis of Highly Substituted, Diastereomerically and Enantiomerically Pure 3-Acyl-
tetrahydrofurans from 4-Hydroxy-1-alkenylcarbamates,
Tetrahedron Lett. 1989, 30, 1233-1236.
T. Krämer, J.-R. Schwark, D. Hoppe,
Enantiomerically Enriched Allylstannanes from Chiral Allyllithium Derivatives and their Highly
Regio-, Diastereo- and Enantioselective Hydroxyalkylation,
Tetrahedron Lett. 1989, 30, 7037-7040.
1987
D. Hoppe, C. Gonschorrek,
4-Oxy-Substituted 1-Lithio-1,2-alkadienyl Carbamates: Trapping of Configuratively Stable Allenic
Carbanions and Stereospecific 1,4-Elimination for the Synthesis of Alk-3-en-1-ynyl Carbamates,
Tetrahedron Lett. 1987, 28, 785-788.
Page 24
E. Egert, H. Beck, D. Schmidt, C. Gonschorrek, D. Hoppe,
Stereoselective Synthesis of Functionalized, Tetra- and Penta-substituted 1,3-Butadienes by Allene
Claisen Rearrangement,
Tetrahedron Lett. 1987, 28, 789-792.
D. Hoppe, C. Gonschorrek, D. Schmidt, E. Egert,
Highly Regio- and syn-Diastereoselective Synthesis of 4-Hydroxy-1,2-alkadienylcarbamates from
α-Titanated 2-Alkynylcarbamates and Aldehydes,
Tetrahedron 1987, 43, 2457-2466.
D. Hoppe, T. Hilpert,
Enantioselective Total Synthesis of the Fungicide β-Lactam Antibiotic (−)-(2S,5S)-2-(2-
Hydroxyethyl)clavam and its (+)-(2S,5R)-Epimer,
Tetrahedron 1987, 43, 2467-2474.
D. Hoppe, G. Tarara, M. Wilckens, P. G. Jones, Schmidt, J. J. Stezowski,
Enantioselective Synthesis of Methylfuranosides of Unnatural 3,6-Dideoxy-3-methylaldohexoses
from Lactates by Homoaldol Reactions,
Angew. Chem. Int. Ed. Eng. 1987, 26, 1034-1035; Angew. Chem. 1987, 99, 1079-1080.
R. W. Hoffmann, J. Lanz, R. Metternich, G. Tarara, D. Hoppe,
Estimation of the Configurational Stability of Chiral Organometallic Reagents,
Angew. Chem. Int. Ed. Engl. 1987, 26, 1145-1146; Angew. Chem. 1987, 99, 1196-1197.
T. Krämer, D. Hoppe,
Reagent-Controlled Enantioselective Homoaldol Reaction by means of Chiral (α-Oxyallyl)lithiums
Enantio-Divergent Tuning by Achiral Titanium Reagents,
Tetrahedron Lett. 1987, 28, 5149-5152.
1986
D. Hoppe,
Synthesis of Enantiomerically Pure Unnatural Compounds via Non-Biomimetic Homoaldol
Reactions
in: M. P. Schneider (Ed.) Enzymes as Catalysts in Organic Synthesis, 177-198, NATO ASI Series
Vol. C 178; Reidel, Dordrecht 1986.
D. Hoppe, J. Lüßmann, P. G. Jones, D. Schmidt, G. M. Sheldrick,
Highly Diastereoselective Synthesis of 1,2-Epoxy-4-hydroxyalkyl Carbamates. Masked and
Activated α, γ-Dihydroxy-alkanals and –alkanones,
Tetrahedron Lett. 1986, 27, 3591-3594.
Page 25
J. Lüßmann, D. Hoppe, P. G. Jones, C. Fittschen, G. M. Sheldrick.
Diastereoselective Synthesis of 2,3,4-Trisubstituted γ-Lactols and γ-Lactones via Regio- and
Stereocontrolled Opening of a 1,2-Epoxy-4-Hydroxyalkyl Carbamate with Hetero-Nucleophiles,
Tetrahedron Lett. 1986, 27, 3595-3598.
D. Hoppe, T. Krämer,
α-Deprotonation of an α-Chiral 2-Alkenylcarbamate with Retention and Lithium-Titanium
Exchange with Inversion - the Homoaldol Reaction with 1,3-Chirality Transfer,
Angew. Chem. Int. Ed. Engl. 1986, 25, 160-62; Angew. Chem. 1986, 98, 171-173.
1985
E. van Hülsen, D. Hoppe,
Completely Stereoselective Synthesis of all four Stereoisomeric 1-Carbamoyloxy-1,3-alkadienes
via anti-Diastereoselective Homoaldol Reaction from Aldehydes and a Single Carbon-Three-Unit,
Tetrahedron Lett. 1985, 26, 411-414.
D. Hoppe, C. Gonschorrek, E. Egert, D. Schmidt,
Allene Claisen Rearrangement with 1,4-Chirality Transfer,
Angew. Chem. Int. Ed. Engl. 1985, 24, 700-701; Angew. Chem. 1985, 97, 706-707.
D. Hoppe, R. Hanko, A. Brönneke, F. Lichtenberg, E. van Hülsen,
Lithiierung acyclischer N,N-Dialkylcarbamidsäure-2-alkenylester; Silylierung und γ-selektive α-
Hydroxyalkylierung von Homoenolat-Reagenzien,
Chem. Ber. 1985, 118, 2822-2851.
1984
D. Hoppe, F. Lichtenberg,
syn-Diastereoselective Homoaldol Reactions: γ-Hydroxyalkylation of (Z)-2-Butenyl Carbamates
and Synthesis of β,γ-cis-Di- and -Trisubstituted γ-Lactones,
Angew. Chem. Int. Ed. Engl. 1984, 23, 239-241; Angew. Chem. 1984, 96, 241-243.
D. Hoppe,
Review: Homoaldol Reaction or How One Can Have a Grasp of the Problems of Regio- and
Stereochemistry,
Angew. Chem. Int. Ed. Engl. 1984, 23, 932-948, Angew. Chem. 1984, 96, 930-946.
1983
D. Hoppe, C. Riemenschneider,
Regio- and Diastereoselective Synthesis of (4-Hydroxy-3-methyl-1,2-alkadienyl)carbamates from
α-Titanated 2-Butynylcarbamates and Aldehydes,
Angew. Chem. Int. Ed. Engl. 1983, 22, 54-55; Angew. Chem. 1983, 95, 64-65.
Page 26
D. Hoppe, A. Brönneke,
Highly Diastereoselective Synthesis of Di- and Trisubstituted 4-Butanolides from Aldehydes and
Ketones via Three-Carbon-Extension by Allylic Homoenolate Reagents,
Tetrahedron Lett. 1983, 24, 1687-1690.
D. Hoppe, G. M. Sheldrick, E. Egert, P. Kaars,
Synthesis and Structure of (Z)-3-Amino-4-oxo-2-azetidinesulfonic Acids, Angew. Chem. Int. Ed.
Engl. 1983, 22, 886-887;
Angew. Chem. 1983, 95, 912-913; Angew. Chem. Suppl. 1983, 1333-1342.
1982
D. Hoppe, F. Lichtenberg,
Diastereoselective Homoaldol Reaction with a (1-Oxycrotyl)aluminum Compound, a Homoenolate
Equivalent of n-Butanal,
Angew. Chem. Int. Ed. Engl. 1982, 21, 372; Angew. Chem. 1982, 94, 378; Angew. Chem. Suppl.
1982, 961-972.
R. Hanko, D. Hoppe,
Highly Diastereo- and Regioselective Homoaldol Reactions with (1-Oxyallyl)titanium Derivatives,
Angew. Chem. Int. Ed. Engl. 1982, 21, 372-373; Angew. Chem. 1982, 94, 378-379.
D. Hoppe, A. Brönneke,
Synthesis of N,N-Dialkylcarbamic Acid (1-Arylalk-1-yl)esters by Lithiation and Substitution of
Benzylic Type Carbamates,
Synthesis 1982, 1045-1048.
D. Hoppe,
Focus on Synthesis. Enantioselective Synthesis of β-Lactam Antibiotics,
Nachr. Chem. Techn. Lab. 1982, 30, 24-27.
D. Hoppe,
Woodward’s Synthesis of Erythromycin,
Nachr. Chem. Techn. Lab. 1982, 30, 137-139.
D. Hoppe,
Alkylation of Vinylogeous Ester, Carboxylate, and Amide Enolates,
Nachr. Chem. Techn. Lab. 1982, 30, 196-198.
D. Hoppe,
Transition Metal-Catalyzed Stereocontrolled Epoxydations,
Nachr. Chem. Techn. Lab. 1982, 30, 281-283.
Page 27
D. Hoppe,
Carbonyl Compounds as Dienophils in the Diels-Alder Reaction,
Nachr. Chem. Techn. Lab. 1982, 30, 403-406.
D. Hoppe,
Total Synthesis of Calcimycin,
Nachr. Chem. Techn. Lab. 1982, 30, 581-582
D. Hoppe,
Synthesis of Pure Enantioners of α-Amino Acids I,
Nachr. Chem. Techn. Lab. 1982, 30, 782-783.
D. Hoppe,
Synthesis of Pure Enantioners of α-Amino Acids II,
Nachr. Chem. Techn. Lab. 1982, 30, 852-853.
D. Hoppe,
New Total Synthesis of Monosaccharides,
Nachr. Chem. Techn. Lab. 1982, 30, 934-938.
D. Hoppe,
Diastereoselective Carbon-Carbon Bonds and Their Stereochemical Specification,
Nachr. Chem. Techn. Lab. 1982, 30, 1030-1033.
1981
R. Hanko, D. Hoppe,
Dilithiated Allyl N-Alkyl- or N-Phenylcarbamates, Readily Accessible Propionaldehyde-d3
Equivalents,
Angew. Chem. Int. Ed. Engl. 1981, 20, 127-128; Angew. Chem. 1981, 93, 115-116.
D. Hoppe, R. Hanko, A. Brönneke, F. Lichtenberg,
Highly Alkylated 1-Oxyallyl Anions from N,N-Dialkylcarbamic Acid Allyl Esters: γ-
Hydroxyalkylation (Homoaldol Reaction), Angew. Chem. Int. Ed. Engl. 1981, 20, 1024-1026; Angew. Chem. 1981, 93, 1106-1108.
1980
D. Hoppe, L. Beckmann, R. Follmann,
α-Carbamoyloxymethyl-Substituted Lithium Enethiolates from 1-(N,N-Dimethylcarbamoylthio)-2-
methyl-1-propenyllithium,
Angew. Chem. Int. Ed. Engl. 1980, 19, 303-304; Angew. Chem. 1980, 92, 305-306.
Page 28
D. Hoppe, M. Kloft,
Allgemeine Synthese von N-geschützten 2-(trans-4-Alkylthio-3-amino-2-oxoazetidinyl)acrylsäure-
alkylestern (trans-7-Amino-1,2-secoceph-3-em-4-carbonsäureestern) mit modifizierter Seitenkette,
Liebigs Ann. Chem. 1980, 1512-1526.
D. Hoppe, M. Kloft,
Exchange of Tritylthio anf Methylthio Groups in N-Protected Alkyl 2-(trans-4-Alkylthio-3-amino-
2-oxo-azetidin-1-yl)acrylates,
Liebigs Ann. Chem. 1980, 1527-1539.
D. Hoppe, R. Hanko, A. Brönneke,
Lithiated Allyl N,N-Dialkylcarbamates as Homoenolate Equivalents; Synthesis of Protected 4-
Oxoalkanoates,
Angew. Chem. Int. Ed. Engl. 1980, 19, 625-627; Angew. Chem. 1980, 92, 637-639.
D. Hoppe, L. Beckmann,
2-Azaallyl Anions from Dialkyl N-Benzyliminodithiocarbonates, monothiocarbonates, and -
carbonates as Benzylamine Anion Equivalents,
Liebigs Ann. Chem. 1980, 1751-1764.
D. Hoppe, R. Follmann, L. Beckmann,
Synthesis of 2-Alkylimino- and 2-Arylimino-1,3-oxathiolanes from lithiated S,S-Dialkyl
Imidodithiocarbanates and Carbonyl Compounds,
Liebigs Ann. Chem. 1980, 1765-1778.
D. Hoppe, R. Follmann,
Conversion of 2-Methylimino-1,3-oxathiolanes into Thiiranes,
Liebigs Ann. 1980, 1779-1785.
1979-1975
D. Hoppe, L. Beckmann,
Deprotonierung und selektive Mono- und Dialkylierung von N-Bis(alkylthio)methylen-glycinestern
zum Aufbau von kettenverlängerten und α-verzweigten α-Aminosäureestern,
Liebigs Ann. Chem. 1979, 2066-2075.
D. Hoppe, E. Raude,
Zur Synthese von 3-N-[Bis(alkylthio)methylen]amino-2-azetidinonen durch Imin-Säurechlorid-
Reaktion,
Liebigs Ann. Chem. 1979, 2076-2088.
M. Kloft, D. Hoppe,
Notiz zur γ-Bromierung von 2-Isothiocyanato-2-butensäureestern und zur nachfolgenden
nucleophilen Substitution,
Chem. Ber. 1979, 112, 3939-3941.
Page 29
M. Kloft, D. Hoppe,
(±)-trans-7-Azido-1,2-secoceph-3-em-4-carbonsäureester mit modifizierten Seitenketten aus 5-
substituierten 2-Thiazolin-4-carbonsäureestern,
Tetrahedron Lett. 1977, 2141-2144.
D. Hoppe, M. Kloft,
(±)-trans-7-Azido- und 7-Phthalimido-1,2-seco-ceph-3-em-4-carbonsäureester aus 3-substituierten
2-Isothiocyanato-acrylsäureestern,
Tetrahedron Lett. 1977, 2145-2146.
D. Hoppe,
Metallierte Stickstoff-Derivate der Kohlensäure in der organischen Synthese - Bausteine für das
Penicillin- und Cephalosporin-Gerüst,
Habilitationsschrift, Universität Göttingen, 1977.
D. Hoppe, R. Follmann,
Homologization of Aldehydes and Ketones to Thiiranes or S-Vinyl Thiocarbamates via 2-
Alkylimino-1,3-oxa-thiolanes,
Angew. Chem. Int. Ed. Engl. 1977, 16, 462-463; Angew. Chem. 1977, 89, 478-479.
E. Raude, D. Hoppe,
A New cis-Stereospecific β-Lactam Ring Closure,
Angew. Chem. Int. Ed. Engl. 1977, 16, 544-545; Angew. Chem. 1977, 89, 553-554.
I. Hoppe, D. Hoppe, U. Schöllkopf,
α-Metallierte α-Isothiocyanatoalkansäureester - ein neuer Typ von 2-Azaallylanionen,
Tetrahedron Lett. 1976, 609-612.
D. Hoppe, R. Follmann,
2-Thioxo-1,3-oxazoline durch Cycloaddition von α-metallierten Alkylisothiocyanaten an
Carbonylverbindungen,
Chem. Ber. 1976, 109, 3047-3061.
D. Hoppe, R. Follmann,
α-(Alkoxycarbonylamino)acrylsäuresester (N-Acyl-α,β-dehydroaminosäureester) durch
baseninduzierte Ringöffnung von 3-Alkoxycarbonyl-2-thioxo-4-oxazolidincarbonsäureestern,
Chem. Ber. 1976, 109, 3062-3078.
D. Hoppe,
2-Alkylthio-2-oxazolin-4-carbonsäureester und ihre baseninduzierte Ringöffnung zu 2-(N-
[(Alkylthio)carbonyl]amino)acrylsäureestern,
Liebigs Ann. Chem. 1976, 1843-1849.
D. Hoppe, M. Kloft,
Zur Synthese von 2-Isothiocyanatoacrylsäureestern aus Isothiocyanatoessigsäureestern und
Carbonylverbindungen,
Liebigs Ann. Chem. 1976, 1850-1861.
Page 30
M. Kloft, D. Hoppe,
Ringschlüsse bei der Addition von Nucleophilen an α-Isothiocyanatoacrylsäureester,
Liebigs Ann. Chem. 1976, 1997-2006.
D. Hoppe,
Reaktionen von 2-Isothiocyanato-3,3-dimethylacrylsäure-äthylester mit 5-Oxazolon-Anionen,
Liebigs Ann. Chem. 1976, 2185-2193.
U. Schöllkopf, D. Hoppe, R. Jentsch,
Höhere Aminosäuren durch Alkylieren von α-metallierten α-Isocyanpropionsäure- und –
essigsäureestern,
Chem. Ber. 1975, 108, 1580-1592.
D. Hoppe,
Metalated Dialkyl N-Alkyliminocarbonates: New Masked α-Amino and α-Thio Carbanions,
Angew. Chem. Int. Ed. Engl. 1975, 14, 424-426; Angew. Chem. 1975, 87, 449-450.
D. Hoppe,
Chain-Extended and α-Branched α-Amino Acids by Alkylation of Metalated α-
[Bis(alkylthio)methyleneamino] Acid Esters,
Angew. Chem. 1975, 87, 450-451; Angew. Chem. Int. Ed. Engl. 1975, 14, 426-427.
1974-1969
D. Hoppe,
Review: α-Metalated Isocyanides in Organic Synthesis. New Synthetic Methods,
Angew. Chem. Int. Ed. Engl. 1974, 13, 789-804; Angew. Chem. 1974, 86, 878-893
sowie New Synthetic Methods, Vol. 2 (Verlag Chemie, Weinheim 1975)
U. Schöllkopf, D. Hoppe,
5-Substituted Ethyl 2-Thiazoline-4-carboxylates,
Angew. Chem. Int. Ed. Engl. 1973, 12, 1006-1007; Angew. Chem. 1973, 85, 1102-1103.
U. Schöllkopf, R. Harms, D. Hoppe,
1-Amino-1-cyclopropancarbonsäureester über 1-Isocyan-cyclopropancarbonsäure-äthylester,
Liebigs Ann. Chem. 1973, 611-618.
D. Hoppe,
Ethyl 3-Acyl-2-thioxo-1,3-oxazolidine-4-carboxylates and Their Conversion into Ethyl α-(N-
Acylamino)acrylates,
Angew. Chem. Int. Ed. Engl. 1973, 12, 656-658; Angew. Chem. 1973, 85, 659-660.
D. Hoppe,
2-Alkylthio-2-oxazoline-4-carboxylic Esters and Their Conversion into α-(N-
Alkylthiocarbonylamino)acrylic Esters,
Angew. Chem. Int. Ed. Engl. 1973, 12, 658-659; Angew. Chem. 1973, 85, 660-661.
Page 31
D. Hoppe,
3-Substituted 2-Isothiocyanatoacrylic Esters,
Angew. Chem. Int. Ed. Engl. 1973, 12, 923-924; Angew. Chem. 1973, 85, 909-910.
U. Schöllkopf, D. Hoppe,
Benzyl-N-formyl-cysteine,
Liebigs Ann. Chem.1973, 766, 799-804.
U. Schöllkopf, F. Gerhart, R. Schröder, D. Hoppe,
Synthesen mit α-metallierten Isocyaniden - β-Substituierte α-Formylamino-acrylsäureäthylester aus
α-metallierten Isocyanessigestern und Carbonylverbindungen (Formylaminomethylenierung von
Carbonylverbindungen),
Liebigs Ann. Chem.1972, 766, 116-129.
D. Hoppe, U. Schöllkopf,
Ethyl α-Formylamino-β-hydroxy-acid Esters (β-Substituted N-Formylserine Esters) from Ethyl 2-
Oxazoline-4-carboxylates,
Angew. Chem. Int. Ed. Engl. 1972, 11, 432-433; Angew. Chem. 1972, 84, 435-436.
D. Hoppe, U. Schöllkopf,,
Äthoxycarbonyl-2-oxazoline und ihre Hydrolyse zu N-Formyl-β-hydroxy-α-aminosäure-
äthylestern,
Liebigs Ann. Chem. 1972, 763, 1-16.
D. Hoppe,
1,3-Oxazolidine-2-thiones from Alkyl Isothiocyanates and Carbonyl Compounds,
Angew. Chem. Int. Ed. Engl. 1972, 11, 933-934; Angew. Chem. 1972, 84, 956-957.
U. Schöllkopf, D. Hoppe, R. Jentsch,
Higher Amino Acids by Alkylation of α-Metalated Isocyanoacetic or -propionic Esters,
Angew. Chem. Int. Ed. Engl. 1971, 10, 331-333; Angew. Chem. 1971, 83, 357-359.
U. Schöllkopf, D. Hoppe,
β-Substituted N-Formyl-S-benzylcysteines,
Angew. Chem. Int. Ed. Engl. 1970, 9, 236-237; Angew. Chem. 1970, 82, 253-254.
D. Hoppe, U. Schöllkopf,
Ethyl 2-Oxazoline-5-carboxylate from Ethyl Isocyanoacetate and Carbonyl Compounds,
Angew. Chem. Int. Ed. Engl. 1970, 9, 300-301; Angew. Chem. 1970, 82, 290-291.
U. Schöllkopf, D. Hoppe,
N-Formylphenylalanine Ethyl Esters by Hydrogenolysis of Ethyl 5-Aryl-2-oxazoline-4-
carboxylates,
Angew. Chem. Int. Ed. Engl. 1970, 9, 459; Angew. Chem. 1970, 82, 483.
Page 32
D. Hoppe,
Aminosäure-Synthesen mit α-metallierten α-Isocyancarbonsäureestern,
Dissertation, Universität Göttingen, 1970
U. Schöllkopf, D. Hoppe, N. Rieber, V. Jakobi,
Trimethylsilyl-diazoessigsäureäthylester und seine Photolyse zu Trimethylsilyl-äthoxycarbonyl-
carben,
Liebigs Ann. Chem. 1969, 730, 1-15.