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(C) The Hell-Volhard-Zelinsky $(HVZ)$ reaction is used for the halogenation of carboxylic acids at the $\alpha$-position.When carboxylic acids contain

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Hell-Volhard-Zelinsky Reaction

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(C) The Hell-Volhard-Zelinsky $(HVZ)$ reaction is used for the halogenation of carboxylic acids at the $\alpha$-position.When carboxylic acids containing $\alpha$-hydrogen atoms are treated with $Br_2$ or $Cl_2$ in the presence of a small amount of red phosphorus,the $\alpha$-hydrogen is replaced by the halogen atom.The reaction for the preparation of $\alpha$-bromoacetic acid is:$CH_3COOH + Br_2 \xrightarrow{	ext{red } P} CH_2BrCOOH + HBr$Thus,the correct option is $(C)$.

Which reaction is used for the preparation of $\alpha$-bromoacetic acid?

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