Chapter 16, Problem 27P

Interpretation Introduction

Interpretation:

A structure of the cyclic ether having molecular formula ${\text{C}}_{\text{4}}{\text{H}}_{\text{8}}{\text{O}}_{\text{2}}$ and obtained by heating $\text{1,2,4-butanetriol}$ in presence of an acid catalyst is to be suggested.

Concept introduction:

The diols can be converted to cyclic ether on heating in presence of acid catalyst if a five or six membered ring can form.

One of the hydroxyl groups gets protonated and leaves as water molecule by nucleophilic attack of other hydroxyl group.