Synthesis of 2-Amino-3-cyano-4H-chromene-4-carboxamide Derivatives by an Isocyanide-Based Domino Conjugate Addition/O-Trapping Rearrangement Sequence
作者:Márió Gyuris、Ramóna Madácsi、László G. Puskás、Gábor K. Tóth、János Wölfling、Iván Kanizsai
DOI:10.1002/ejoc.201001502
日期:2011.2
An efficient, one-pot domino synthesis of new 2-amino-3-cyano-4H-chromene-4-carboxamide derivatives has been developed by the acid-induced conjugate addition of isocyanides to 2-imino-2H-chromene-3-carboxamides, followed by an intramolecular O-trapping rearrangement, with yields up to 92 %. This newly established protocol was also used in multicomponent (3CR) mode.
通过异氰化物与 2-亚氨基-2H-色烯-3-甲酰胺的酸诱导共轭加成,开发了一种有效的一锅多米诺合成新的 2-氨基-3-氰基-4H-色烯-4-甲酰胺衍生物,然后是分子内 O-捕获重排,产率高达 92%。这种新建立的协议也用于多组分 (3CR) 模式。