Chapter 21.7, Problem 15P

Interpretation Introduction

Interpretation: The product M of the given two-step reaction sequence is to be identified.

Concept Introduction: The addition of a halogen to an alkyne chain leads to the formation of corresponding alkene or alkane. The reaction which includes the addition of bromine atoms to the alkyne chain is known as bromination. Bromination can be done by using the reagents like $\text{HBr}$ or ${\text{Br}}_{\text{2}}$.

The replacement or substitution of one functional group with another different functional group in any chemical reaction is termed as substitution reaction. The nucleophilic reaction that consists of bimolecular as well as bond-making and bond-breaking steps is termed as ${\text{S}}_{\text{N}}\text{2}$ reactions. This is a one-step reaction in which both nucleophile and substrate participate in the rate determining step.