Question Details


The above reaction is an example of

Options

A

Sandmeyer's reaction

B

Wurtz reaction

C

Wurtz Fittig reaction

D

Kolbe reaction

Show Answer

Correct Answer :

Option C

Wurtz Fittig reaction

Solution :

The correct option is Wurtz Fittig reaction.

Analysis of the Given Reaction:
Based on the provided image, the reaction depicts the following components:
1. Chlorobenzene (an aryl halide, shown as a benzene ring with a Cl atom attached).
2. Sodium metal (represented by 2Na).
3. Methyl chloride (an alkyl halide, represented by CH3-Cl).
4. Reaction conditions: Heat and Dry ether (written above and below the reaction arrow).
5. Products: Toluene (an alkylarene, shown as a benzene ring with a methyl group attached) and 2NaCl (sodium chloride).

Reaction Mechanism and Classification:
When a mixture of an aryl halide and an alkyl halide is treated with sodium metal in the presence of dry ether, they undergo a coupling reaction to form an alkylbenzene. This coupling of an aryl halide with an alkyl halide is known as the Wurtz-Fittig reaction.

The general chemical equation for this reaction can be represented as:
Ar-Cl + 2 Na + R-Cl Dry Ether / Heat Ar-R + 2 NaCl
Where Ar represents the phenyl group (C6H5) and R represents the methyl group (CH3).

Comparison with Other Options:
Wurtz Reaction: Involves only alkyl halides (R-X+R-X) reacting with sodium to yield symmetrical alkanes.
Sandmeyer's Reaction: Used to synthesize aryl halides from diazonium salts using copper(I) salts as catalysts.
Kolbe Reaction: Involves the carboxylation of sodium phenoxide with carbon dioxide to produce salicylic acid.

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