MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistryCarboxylic Acids and DerivativesCH CH CH Cl CO H
The product formed during Hell-Volhard-Zelinsky reaction is (a) R CH COOH | X (b) R CH COX (c) X | R C COOH | X (d) R CH CH COOH | X
Answer
A
Explanation
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 give α-halo carboxylic acids. The reaction is known as Hell-Vohard-Zelinsky reaction. Carboxylic Acid and Its Derivatives 17
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