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Question

The reaction of chlorine on carboxylic acids to form alpha chloro acids is called as:

A
Hunsdiecker reaction
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B
Hell-Volhard-Zelinsky reaction
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C
Hoffmann mustard oil reaction
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D
Rossenmund reaction
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Solution

The correct option is B Hell-Volhard-Zelinsky reaction
The reaction of chlorine on carboxylic acids to form alpha chloro acids is called Hell-Volhard-Zelinsky reaction.

RCH2COOHi.X2/redphosphorus,ii.water−−−−−−−−−−−−−−−−RCHXCOOH

In this reaction, alpha hydrogen of carboxylic acids is replaced with halogen atom.

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