Alkenes Alkene Nomenclature The longest continuous chain that includes the double bond forms the base name of the alkene, and the chain is numbered in the direction that…

Why? Why? Summary Mechanism for dehyrdration of 2◦ and 3◦ via E1 mechanism Question Mechanism for dehydration of 1◦ via E2 mechanism How to determine the major product…

Slide 1 Williamson Ether Synthesis 9-6 Ethers are prepared by S N 2 reactions. Ethers can be prepared by the reaction of an alkoxide with a primary haloalkane or sulfonate…

Slide 1 23-1 Preparation  We have already covered these methods nucleophilic ring opening of epoxides by ammonia and amines. addition of nitrogen nucleophiles to aldehydes…

Slide 1 © Prentice Hall 2001Chapter 31 Addition of Hydrogen Halides to Alkenes What about the following reaction? Which sp 2 carbon gets the hydrogen and which gets the…

Slide 1 Chapter 51 Reactions of Alkenes and Alkynes. Chapter 5 Slide 2 Chapter 52 Contents of Chapter 4 Electrophilic Addition Reactions Electrophilic Addition Reactions…

Addition of Hydrogen Halides to Conjugated Dienes Electrophilic Addition to Conjugated Dienes Proton adds to end of diene system Carbocation formed is allylic H X H + Example:…

An alternative to making the halide: ROH  ROTs p-toluenesulfonyl chloride Tosyl chloride TsCl Tosylate group, -OTs, good leaving group, including the oxygen. The configuration…

Dienes Reactions of Dienes isolated dienes: double bonds react independently of one another conjugated dienes: reactivity pattern requires us to think of conjugated diene…

PowerPoint Presentation Bromination of Benzene 1 Mechanism for the Bromination of Benzene: Preliminary Step Before the electrophilic aromatic substitution can take place,…