The increasing order of ratio of E2 to S N 2 products observed on reaction of each with sodium ethoxide in ethanol has to be given. Concept Introduction: S N 2 reaction: It is a nucleophilic substitution reaction in which the rate determining step depends on both alkyl halide and the nucleophile present. The bond making and the bond breaking process happens simultaneously in this reaction, which results in the inversion of configuration. Rate = k [ alkylhalide ] × [ nucleophile ] E2 reaction: The elimination of leaving groups simultaneously is known as E2 elimination. In E2 reaction, more stable alkene is formed.

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, Problem 9.44P

Interpretation Introduction

Interpretation:

The increasing order of ratio of E2 to SN2 products observed on reaction of each with sodium ethoxide in ethanol has to be given.

Concept Introduction:

SN2 reaction: It is a nucleophilic substitution reaction in which the rate determining step depends on both alkyl halide and the nucleophile present. The bond making and the bond breaking process happens simultaneously in this reaction, which results in the inversion of configuration.

Rate = k [alkylhalide]×[nucleophile]

E2 reaction:

The elimination of leaving groups simultaneously is known as E2 elimination. In E2 reaction, more stable alkene is formed.

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