Question

a) Write the organic compound formed in the above equations?
b) Explain $HVZ$ (Hell-Volhard-Zelinsky) reaction with equation?

Answer 1

Hell-Volhard-Zelinsky reaction: Carboxylic acids having an α-hydrogen are halogenated at the $\alpha$-position on treatment with chlorine or bromine in the presence of small amount of red phosphorus to give $\alpha$-halocarboxylic acids (marked as $\ast$).