Chapter 26, Problem 26.10P

Interpretation Introduction

Interpretation:

The curved arrow mechanism for the given reaction is to be shown.

Concept Introduction:

Erlich’s reagent is $\text{p-dimethylaminobenzaldehyde}$ compound. It is used for the detection of pyrroles and indoles. The compound $\text{p-dimethylaminobenzaldehyde}$ in presence of acid and ethanol reacts with pyrrole to form a colored compound. The different pyrrole and indoles are identified by the characteristic color given by them with Erlich’s reagent.