Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013 Organic Chemistry – II (CMT – 203) 1 Model Answer For M. Sc. (Chemistry) (Second Semester) Examination, 2013 CHEMISTRY (ORGANIC CHEMISTRY – II) AR-7129
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Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
1
Model Answer
For
M. Sc. (Chemistry) (Second Semester) Examination, 2013
CHEMISTRY
(ORGANIC CHEMISTRY – II)
AR-7129
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
2
Section – A
(Short Answer Type Questions)
1. (i) Prove that the C-C single bond can participate in NGP.
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
3
1. (ii) 4-Chloro-1-butanol reacts with PhSH 5700 times faster than 3-chloro-1-butanol;
Explain with mechanism.
1. (iv) Complete the reactions:
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
4
1. (iii) Presence of –OMe group activate benzene rings towards electrophilic substitution reaction but
deactivate benzene reaction for nucleophiles. On the other hand, -NO2 acts in opposite direction. –
Explain.
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
5
1. (v)
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
6
1. (vii)
1. (ix) Give probable mechanism for the following photochemical reaction
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
7
1. (x) Suggest mechanism for the following photo reaction
1. (vii) General mechanism and Energy profile diagram of Friedel-Craft reaction.
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
8
Section – A
(Short Answer Type Questions)
2. (a) Write the general mechanism, evidences and effect of substituent’s on SNAr2
reaction.
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
9
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
10
2. (b) Discuss the NGP by sigma and Pi-bond
Discuss details with suitable examples.
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
11
3 (a) Friedel-Craft reaction:
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
12
3 (b) von-Ritcher Reaction
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
13
Q. 4 (a)
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
14
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
15
5. (i)
5. (ii)
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
16
5 (iii)
6 (a)
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
17
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
18
7 (a)
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
19
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
20
8. (a)
8. (b)
Model Answer for M.Sc. (Chemistry) Second Semester Examination, 2013
Organic Chemistry – II (CMT – 203)
21
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