Question

What is Hell Volhard Zelinsky reaction..??

Answer 1

The Hell-Volhard-Zelinsky reaction is an organic reaction used to convert a carboxylic acid with an α-hydrogen and a halogen, to an α-halo carboxylic acid, using a phosphorus catalyst and water.

Hope it helps...

Answer 2

Hey !!

HELL - VOLHARD ZELINSKY

R ----- CH₂ ----- COOH --(i)(X₂/Red phosphorous)--> R ---- CH ---- COOH

                                                                                                  \

                                                                                             X = Cl, Br

(ii) H₂O

Good luck !!