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Get Answers to all your Questions
Account for the following :
(a) Aromatic carboxylic acids do not undergo Friedel-Crafts reaction.
(b) value of 4-nitrobenzoic acid is lower than that of benzoic acid.
Answers (1)
(a) Aromatic carboxylic acid do not undergo Friedel Crafts reaction because of deactivating nature of -COOH group and the catalyst AlCl3 gets bonded to -COOH.
(b) value of 4-nitrobenzoic acid is lower than that of benzoic acid because
is an electron withdrawing group, it increases the acidic strength of carboxylic acids by stabilizing the carboxylate ion due to dispersal of negative charge.
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