Question

Which of the following reagents is required for the conversion of Benzene to methyl benzoate?
(A) Br\(_2\)/FeBr\(_3\)
(B) Mg, dry Ether
(C) CO\(_2\), H\(_3\)O\(^+\)
(D) Methanol, Conc. H\(_2\)SO\(_4\)

• A. (A), (B) and (C) only
• B. (A), (B) and (D) only
• C. (A), (B), (C) and (D)
• D. (B), (C) and (D) only

Hint:

The Friedel-Crafts acylation is a key reaction for adding an acyl group to aromatic compounds, while Grignard reagents help add alkyl groups.

Answer 1

The Correct Option is C

Step 1: Friedel-Crafts Acylation (A).
To convert benzene to methyl benzoate, a Friedel-Crafts acylation is required. This reaction uses acylating reagents like \[CO_2\] in the presence of a catalyst such as FeBr\(_3\).
Step 2: Grignard Reagent (B).
The Grignard reagent (e.g., Mg, dry Ether) helps in the nucleophilic attack by adding a methyl group to the carbonyl group of methyl benzoate.
Step 3: Carbonation (C).
The carbonyl group is introduced using carbon dioxide (\[CO_2\]) and water (\[H_3O^+\]), forming the methyl ester in the reaction.
Step 4: Esterification (D).
The final step involves esterification, which requires methanol and concentrated sulfuric acid (\[H_2SO_4\]), converting the intermediate compound into methyl benzoate.
Conclusion:
The correct reagents required to convert Benzene to methyl benzoate are (A), (B), (C), and (D).
Final Answer: \[ \boxed{\text{The correct answer is (A), (B), (C) and (D).}} \]