The development of an intermolecular aza-Diels–Alder (DA) cycloaddition of sultines and imines is reported. By exploiting sultines as o-quinodimethane precursors and aryl imines as dienophiles in the presence of Cu(OTf)2, an aza-DA reaction proceeds to provide a wide variety of 3-aryl tetrahydroisoquionlines in moderate to excellent yield (up to 89%). The synthetic utility of these products was demonstrated
报道了
磺胺和
亚胺的分子间氮杂-狄尔斯-阿尔德 (
DA) 环加成反应。通过在 Cu(OTf) 2存在下利用亚砜作为邻-醌二
甲烷前体和芳基
亚胺作为亲二烯体,aza-
DA 反应继续以中等至优异的产率(高达 89%)提供多种 3-芳基
四氢异喹啉. 这些产品的合成效用在四环 N-杂环的制备中得到证实,包括四氢原
小檗碱骨架。