Q37 / 150 · MHT CET 2026 (11 April Shift 2) · Chemistry
Which of the following types of reactions is used to prepare Alkyl benzene?
- ASwartz reaction
- BSandmeyer reaction
- CFinkelstein reaction
- Correct answerDWurtz Fittig reaction
Solution
The Wurtz-Fittig reaction involves the reaction of an aryl halide with an alkyl halide in the presence of sodium metal and dry ether to form an alkyl benzene.
$C_6H_5X + RX + 2Na \xrightarrow{\text{dry ether}} C_6H_5R + 2NaX$
Swartz reaction is used for the synthesis of alkyl fluorides.
Sandmeyer reaction is used to synthesize aryl halides from aryl diazonium salts.
Finkelstein reaction is used for the preparation of alkyl iodides from alkyl chlorides or bromides.
Answer: Wurtz Fittig reaction
$C_6H_5X + RX + 2Na \xrightarrow{\text{dry ether}} C_6H_5R + 2NaX$
Swartz reaction is used for the synthesis of alkyl fluorides.
Sandmeyer reaction is used to synthesize aryl halides from aryl diazonium salts.
Finkelstein reaction is used for the preparation of alkyl iodides from alkyl chlorides or bromides.
Answer: Wurtz Fittig reaction
Hence, the correct answer is option: 'D'.