MHT CET 2022 Chemistry question

Which of the following compounds has difficulty in braking C-X bond ?

(A)O -nitrochlorobenzene
(B)P - nitrochlorobenzene
(C)m - nitrochlorobenzeneCorrect
(D)2, 4, 6 - trinitrochlorobenzene

Answer: (C)

Solution

Cleavage of the C-Cl bond in nucleophilic aromatic substitution proceeds through a carbanion (Meisenheimer complex) whose negative charge is delocalised on the ortho and para positions. An group at the ortho or para position stabilises this carbanion by resonance ( and effect) and makes C-Cl

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Question ID VK-095920