JEE Main Chemistry question

Which structure corresponds to the product when an excess of C₆H₆ reacts with CH₂Cl₂ in the presence of anhydrous AlCl₃?

(A)Diphenylmethane, Ph–CH₂–Ph (both chlorines of CH₂Cl₂ successively replaced by phenyl groups)Correct
(B)Ph–CHCl₂ (only one chlorine replaced)
(C)Ph₂CCl₂ (a structure retaining two chlorines on the same carbon bearing two phenyls)
(D)A bis-benzyl structure with two separate CH₂ bridges

Answer: (A)

Solution

CH₂Cl₂ can undergo Friedel–Crafts alkylation twice in succession; with benzene present in large excess, both

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Question ID VK-140226