Chapter 9, Problem 39DSP

Interpretation Introduction

Interpretation:

The selection of the compound that describes the reaction mechanism that takes place in the first step of the given reaction is to be determined.

Concept Introduction:

Alkynes are produced by both electrophilic and nucleophilic reaction. During the electrophilic reaction, the E2 reaction mechanism pathway is followed and in nucleophilic, ${\text{S}}_{\text{N}}2$ mechanism is followed. Alkynes are associated with triple bond therefore; their properties are vastly different for that of alkene and alkane. Alkynes have high electron density hence, favors electrophilic addition reaction.