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Abstract
Abstract An aromatic nucleophilic substitution (SNAr) reaction of p-chloronitrobenzene with N-substituted pyrrolidines under high pressure gave p-pyrrolidinonitrobenzene and ring-opening products through quaternary ammonium salt. The selectivity of dealkylation and ring-opening depends on the electronic and steric factors of N-substituents. The reactions with N-methylaziridine and N-methylazetidine gave ring-opening products without affording any demethylation product.
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