Nitration, chlorination, bromination, Friedel-Crafts reaction and sulp – InterviewSolution

1.	Nitration, chlorination, bromination, Friedel-Crafts reaction and sulphonation of pyridine is very difficult at normal conditions. This difficulty is due to the fact that
Answer» higher AROMATICITY of pyridine in comparison to benzene. pyridine has an available electron PAIR on nitrogen and can thus protonate. attack of an ELECTROPHILE is not possible in such condition. pyridine has less tendency to DONATE its lone pair of electrons. Answer :B

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