Give the chemical equation for Hell Volhard Zelinsky name reaction?
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Hell-Volhard-Zelinsky Reaction

Treatment with bromine and a catalytic amount of phosphorus leads to the selective α-bromination of carboxylic acids.
Mechanism of the Hell-Volhard-Zelinsky Reaction
Phosphorus reacts with bromine to give phosphorus tribromide, and in the first step this converts the carboxylic acid into an acyl bromide.
An acyl bromide can readily exist in the enol form, and this tautomer is rapidly brominated at the α-carbon. The monobrominated compound is much less nucleophilic, so the reaction stops at this stage. This acyl intermediate compound can undergo bromide exchange with unreacted carboxylic acid via the anhydride, which allows the catalytic cycle to continue until the conversion is complete.

Treatment with bromine and a catalytic amount of phosphorus leads to the selective α-bromination of carboxylic acids.
Mechanism of the Hell-Volhard-Zelinsky Reaction
Phosphorus reacts with bromine to give phosphorus tribromide, and in the first step this converts the carboxylic acid into an acyl bromide.
An acyl bromide can readily exist in the enol form, and this tautomer is rapidly brominated at the α-carbon. The monobrominated compound is much less nucleophilic, so the reaction stops at this stage. This acyl intermediate compound can undergo bromide exchange with unreacted carboxylic acid via the anhydride, which allows the catalytic cycle to continue until the conversion is complete.
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Hell Volhard Zelinsky reaction :-
Carboxylic acids having an α- hydrogen are halogenated at the α- position on treatment with chlorine and bromine in the presence of small amount of red phosphorus to give α- halocarboxylic acids .
This reaction is known as Hell Volhard Zelinsky reaction .
Please see the attachment for the same reaction mate ...
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