Which of the following reactions involves alp | vedclass

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(D) The Hell-Volhard-Zelinsky $(HVZ)$ reaction is a specific reaction used for the $\alpha$-halogenation of carboxylic acids.In this reaction,carboxyl

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Hell-Volhard-Zelinsky reaction

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(D) The Hell-Volhard-Zelinsky $(HVZ)$ reaction is a specific reaction used for the $\alpha$-halogenation of carboxylic acids.In this reaction,carboxylic acids containing an $\alpha$-hydrogen atom react with chlorine or bromine in the presence of a small amount of red phosphorus to form $\alpha$-halo carboxylic acids.The reaction proceeds as follows:$CH_{3}CH_{2}COOH$ $\xrightarrow{Br_{2}/P} CH_{3}CH(Br)COOH$ $\xrightarrow{Br_{2}/P} CH_{3}C(Br)_{2}COOH$

Which of the following reactions involves $\alpha$-halogenation of carboxylic acid?

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