Question

explain HVZ reaction? one example of HVZ reaction? QUICK

Answer 1

Mechanism of the Hell-Volhard-Zelinsky Reaction. Phosphorus reacts with bromine to give phosphorus tribromide, and in the first step this converts the carboxylic acid into an acyl bromide. An acyl bromide can readily exist in the enol form, and this tautomer is rapidly brominated at the α-carbon.

First step, a carboxylic acid is converted to an acid bromide. In the second step, an alpha hydrogen is replaced with a bromine atom.