Chapter 19.SE, Problem 39MP

Interpretation Introduction

Interpretation:

Given

How the phosphorane required can be prepared is to be shown. A mechanism for the hydrolysis step is to be proposed.

Concept introduction:

Phosphoranes required for Wittig reaction are prepared by the SN² reaction of a primary and some secondary alkyl halides withtriphenyl phosphine followed by treatment with bases like butyl lithium in THF.

To show:

How the phosphorane required for the reaction can be prepared.

To propose:

A mechanism for the hydrolysis step.