Chapter 11.11, Problem 18P

Interpretation Introduction

Interpretation: The reason corresponding to the fact that $2,2,5,5-\text{tetramethyl}-3-\text{hexyne}$ cannot be prepared by using acetylide anion is to be stated.

Concept Introduction: 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.