JEE Main 2015 · 10 Apr · Shift 1 · Chemistry Q55

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ChemistrySingle correct+4 / -1Question 55 of 90

In the presence of a small amount of phosphorous, aliphatic carboxylic acids react with chlorine or bromine to yield a compound in which α - hydrogen has been replaced by halogen. This reaction is known as :

Wolff - Kischner reaction

Etard reaction

Hell - Volhard - Zelinsky reaction

Rosenmund reaction

Answer and worked solution

Official answer: C

α-Halogenation of carboxylic acids with $\ce{X2}$ and red P is the Hell-Volhard-Zelinsky reaction.

Topics:Carboxylic acids

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JEE Main 2015 · 10 Apr · Shift 1, Chemistry question 55