Different behaviour of secondary and primary amines towards 1-alkyl-3,4-dinitropyrroles
作者:Paolo Mencarelli、Franco Stegel
DOI:10.1039/c39800000123
日期:——
1-alkyl-3,4-dinitropyrroles with secondaryamines gives nucleophilic aromatic cinesubstitution (formation of 1-alkyl-2-amino-4-nitropyrroles), whereas the reaction with primary amines follows a more complicated pattern, involving mainly a multistep ring-opening and ring-closure process, and also yielding the product of formal direct substitution, but not that of cinesubstitution.