Question

Subsequent chlorination of acetic acid in presence of red phosphorus produces trichloro acetic acid. This reaction is called
[a] Hundsdiecker reaction [b] Finkelstein reaction [c] Cannizzaro reaction [d] Hell-Volhard-Zelinsky reaction​

Answer 1

Answer:

Treatment with chlorine and a catalytic amount of phosphorus leads to the selective α−chlorination of carboxylic acids (HVZ reaction).

CH

3

CH

2

COOH+Cl

2

→

RedP

CH

3

CHCl−COOH