JEE Main · 2023 · 15 Apr 2023 · Shift 1 · Hydrocarbons

The major product formed in the Friedel-Craft acylation of chlorobenzene is .

(A)(see structure)
✓ Correct
(B)(see structure)
(C)(see structure)
(D)(see structure)

Answer: (A)

Solution

In Friedel-Crafts acylation of chlorobenzene, the chlorine atom is an ortho/para-directing group due to its +M (mesomeric) effect, despite being electron-withdrawing by -I (inductive) effect. The para-substituted product is the major product due to steric considerations, as the ortho position experiences steric hindrance. Therefore, 4-chloroacetophenone (para-chloroacetophenone) is the major product.

JEE Main · 2023 · 15 Apr 2023 · Shift 1 · Single correct option

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