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-opening reaction of aziridine by bromide anion followed by Et3N-mediated intramolecular nucleophilic displacement of the bromide by the amide nitrogen. The easy availability
由1-芳基氮丙啶-2-羧酸甲酯与N- [2-溴甲基(芳基)]三氟乙酰胺的一锅反应建立了一种合成新型1,4-苯并二氮杂derivatives衍生物的新方法。反应通过溴化阴离子的氮丙啶的N-苄基化和高度区域选择性的开环反应进行,然后通过酰胺氮通过Et 3 N介导的溴化物的分子内亲核取代反应进行。起始原料的容易获得,简单方便的合成步骤以及为进一步化学操作准备的功能化1,4-苯并二氮杂骨架的形成使得该策略可用于合成和药物化学。