Question

Hell-Volhard Zelinsky reaction is used for the formation of

• A. Alcohols
• B. Aldehydes
• C. Ketones
• D. $\alpha$-halocarboxylic acids

Hint:

The Hell-Volhard Zelinsky reaction selectively halogenates the $\alpha$-position of carboxylic acids, leading to the formation of $\alpha$-halocarboxylic acids.

Answer 1

The Correct Option is D

The Hell-Volhard Zelinsky reaction is a method for halogenating the $\alpha$-position of carboxylic acids, yielding $\alpha$-halocarboxylic acids.
Step 1: Reaction Overview.
This reaction employs bromine or chlorine to specifically halogenate the $\alpha$-carbon of a carboxylic acid. Phosphorus tribromide (PBr\(_3\)) or a similar catalyst is necessary for the reaction to proceed.
Step 2: Evaluate the options.
- Option 1: Alcohols: Incorrect. Alcohols are not products of this reaction.
- Option 2: Aldehydes: Incorrect. Aldehydes are not produced.
- Option 3: Ketones: Incorrect. Ketones are not the outcome.
- Option 4: $\alpha$-halocarboxylic acids: Correct. The Hell-Volhard Zelinsky reaction exclusively produces $\alpha$-halocarboxylic acids.
Step 3: Conclusion.
The purpose of the Hell-Volhard Zelinsky reaction is the synthesis of $\alpha$-halocarboxylic acids.
Final Answer: \[\boxed{\text{The correct answer is $\alpha$-halocarboxylic acids.}}\]