Question
Explain the a – halogenation take place in acetic acid. (or) Explain IIell-Volhard-zelinsky reaction (HVZ reaction)?
✓
Answer
Carboxylic acids having an α – hydrogen are halogenated at the α – position on treatment with chlorine or bromine in the presence of small amount of red phosphorus to form a – halo carboxylic acids. This reaction is known as Hell – Volhard – Zelinsky reaction (HVZ reaction)
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