A versatile synthesis of bicyclic lactams from 1,8-naphthalaldehydic acid: an extension of Meyers’ method
作者:Miguel Ángel Claudio-Catalán、Miguel-Ángel Reyes-González、Mario Ordóñez
DOI:10.3998/ark.5550190.p008.321
日期:——
A new and versatile approach to prepare bicyclic lactams in moderate to high yield is reported herein. This approach, based on an extension of Meyers’ method, provides 6,5-, 6,6and 6,7fused bicyclic lactams 6a-j from reaction of 1,8-naphthalaldehydic acid 7 with several aminoalcohols including L-serine, diamines and ethanethiol, in the absence of any catalyst. The reaction of 7 with (R)-phenylglycinol
本文报道了一种以中等至高产率制备双环内酰胺的新型通用方法。这种方法基于迈耶斯方法的扩展,从 1,8-萘醛酸 7 与几种氨基醇(包括 L-丝氨酸、二胺和乙硫醇)的反应中提供 6,5-、6,6 和 6,7 稠合双环内酰胺 6a-j , 在没有任何催化剂的情况下。7 与 (R)-苯基甘氨醇的反应以优异的非对映选择性 (>98:2) 得到 6,5-稠合双环内酰胺 6j。