Chapter 12.21, Problem 30P

Interpretation Introduction

Interpretation:

The structural formulas of $\text{benzoxazole}$ and $\text{benzothiazole}$ are to be deduced.

Concept introduction:

The azoles resemble with pyrrole in which the $\text{β}$ carbon to nitrogen is replaced with second heteroatom (nitrogen, oxygen or sulfur).

Benz-azoles are azoles in which a five membered ring of azole fuses with the benzene ring.