Brønsted Acid-Catalyzed (4 + 3) Cyclization of<i>N</i>,<i>N</i>′-Cyclic Azomethine Imines with Isatoic Anhydrides
作者:Can Li、Cong-Shuai Wang、Tian-Zhen Li、Guang-Jian Mei、Feng Shi
DOI:10.1021/acs.orglett.8b03604
日期:2019.2.1
A Brønsted acid-catalyzed (4 + 3) cyclization of N,N′-cyclic azomethine imines with isatoic anhydrides has been discovered, which constructs seven-membered nitrogenous heterocyclic frameworks with overall high yields (up to 98% yield). This reaction represents a rarely reported (4 + 3) cyclization of N,N′-cyclic azomethine imines, which involves the reassembly of a C–N bond. In addition, this reaction
已发现布朗斯台德酸与isatoic酸酐的N,N'-环偶氮甲亚胺的酸催化(4 + 3)环化反应,可构建整体高收率(高达98%收率)的七元含氮杂环骨架。该反应代表了很少报道的N,N'-环偶氮甲亚胺的环化(4 + 3),涉及C–N键的重组。此外,该反应还实现了对等酸酐的前所未有的(4 + 3)环化。