Which reaction is used for the preparation of alpha - Bromoacetic acid?

Kolbe’s Reaction

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Reimer-Tiemann Reaction

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Hell volhard Zelinsky Reaction

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Perkin’s Reation

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Solution

The correct option is C
Hell volhard Zelinsky Reaction

When $C l_{2}$ or $B r_{2}$ is react with carboxylic acid in the presence of red phosphorus then a-hydrogen of carboxylic acid is replaced by $C l_{2}$ or $B r_{2}$

$C H_{3} C O O H A c e t i c a c i d B r_{2} \to C H_{2} B r C O O H α - b r o m o a c e t i c a c i d$

This reaction is known as Hell Volhard Zelinsky reaction.

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