Identify 'A' in the following reaction A + Acetyl chloride [anhydrous] AlCl_3 -chloroacetophenone + 4-chloroacetophenone

MHT CET 2025 Chemistry question

Identify 'A' in the following reaction A + Acetyl chloride -chloroacetophenone + 4-chloroacetophenone

(A)Benzene
(B)ChlorobenzeneCorrect
(C)Toluene
(D)Phenol

Answer: (B)

Solution

The reaction of an arene with acetyl chloride in the presence of anhydrous is Friedel-Crafts acylation, which introduces the acetyl group on the ring. The products are chloroacetophenones (2- and 4-isomers), so the chlorine is already present in the reactant: A is chlorobenzene. Chlorine is

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Question ID VK-103302