Question

Identify the Swarts reaction from the following:

• A. \( R-CH_2-Br + NaI \rightarrow R-CH_2-I + NaBr \)
• B. \( 2R-CH_2-Br + 2Na \rightarrow R-(CH_2)_2-R + 2NaBr \)
• C. \( 2C_6H_5Cl + 2Na \rightarrow C_6H_5-C_6H_5 + 2NaCl \)
• D. \( 2R-CH_2-Br + CoF_2 \rightarrow 2R-CH_2-F + CoBr_2 \)

Hint:

Swarts reaction is useful for converting alkyl halides to alkyl fluorides using metal fluorides like CoF\(_2\) or AgF.

Answer 1

The Correct Option is D

Step 1: Understanding Swarts Reaction Swarts reaction is used to prepare alkyl fluorides by reacting alkyl bromides or chlorides with metal fluorides such as CoF\(_2\), Hg\(_2\)F\(_2\), or AgF.

 Step 2: Identifying the Correct Reaction - Among the given reactions, only option (4) involves the replacement of Br with F using CoF\(_2\), which follows the Swarts reaction.