Periselective, Lewis acid-induced intramolecular Diels–Alder reaction of conjugated carbodiimides: efficient synthesis of nitrogen heterocycles, indolo[2,3-b]quinolines and pyrido[2,3-b]indole
作者:Takao Saito、Hiromasa Ohmori、Takahiro Ohkubo、Shinichi Motoki
DOI:10.1039/c39930001802
日期:——
A suitable Lewis acid has been found that accelerates the intramolecular DielsâAlder reaction of conjugated carbodiimides with high periselectivity control, thus providing an efficient and straightforward procedure for constructing indolo[2,3-b]quinoline and pyrido[2,3-b]indole frameworks.
已发现一种合适的路易斯酸,它能够加速共轭碳二亚胺的分子内戴尔斯-阿尔德反应,并具有高选择性控制,从而提供一种高效且简便的方法来构建吲哚[2,3-b]喹啉和吡啶[2,3-b]吲哚框架。