A New Strategy for the Synthesis of 1,4-Benzodiazepine Derivatives Based on the Tandem <i>N-</i>Alkylation−Ring Opening−Cyclization Reactions of Methyl 1-Arylaziridine-2-carboxylates with <i>N-</i>[2-Bromomethyl(phenyl)]trifluoroacetamides
作者:Jin-Yuan Wang、Xue-Fei Guo、De-Xiang Wang、Zhi-Tang Huang、Mei-Xiang Wang
DOI:10.1021/jo7024306
日期:2008.3.1
4-benzodiazepine derivatives has been established from a one-pot reaction of methyl 1-arylaziridine-2-carboxylates with N-[2-bromomethyl(aryl)]trifluoroacetamides. The reaction proceeds through the N-benzylation and highly regioselective ring-openingreaction of aziridine by bromide anion followed by Et3N-mediated intramolecular nucleophilicdisplacement of the bromide by the amide nitrogen. The easy availability