Reason for cis undergo a faster E2 reaction than trans isomer has to be given. Concept Introduction: β elimination: The elimination reaction takes place from β carbon of haloalkane is known as β elimination. In β elimination, a base abstract the proton from β carbon then the removal of halogen ion to form an alkene . In E2 elimination, the proton and leaving group must be in anti-periplanar geometry.

Question

81. a. Propose a mechanism for the following reaction: OH CH2=CHCHC=N b. What is the product of the following reaction? HO H₂O N=CCH2CH2CH OH HO CH3CCH=CH2 H₂O C=N 82. Unlike a phosphonium ylide that reacts with an aldehyde or a ketone to form an alkene a sulfonium ulia

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Question

Chapter 9.7, Problem 9.7P

Interpretation Introduction

Interpretation:

Reason for cis undergo a faster E2 reaction than trans isomer has to be given.

Concept Introduction:

β elimination:

The elimination reaction takes place from β carbon of haloalkane is known as β elimination.

In β elimination, a base abstract the proton from β carbon then the removal of halogen ion to form an alkene.

In E2 elimination, the proton and leaving group must be in anti-periplanar geometry.

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