描述了一种使用InCl 3有效合成新型螺[茚并[ 2,1- b ]喹喔啉-11,4'-吡喃] -2'-胺的单锅四组分反应。茚三酮与1,2-二氨基苯反应生成茚并喹喔啉,然后被丙二酸烷基酯和各种α-亚甲基羰基化合物通过环化作用原位捕获,从而提供了多官能螺取代的茚并[2,1 - b ]喹喔啉-11 ,4'-吡喃-2'-胺。
A one‐pot, four‐component reaction for the efficient synthesis of novel spiro[indeno[2,1‐b]quinoxaline‐11,4′‐pyran]‐2′‐amines by using InCl3 is described. The syntheses are achieved by reacting ninhydrin with 1,2‐diaminobenzenes to give indenoquinoxalines, which are trapped in situ by alkyl malonates and various α‐methylencarbonyl compounds through cyclization, providing multifunctionalized spiro‐substituted
描述了一种使用InCl 3有效合成新型螺[茚并[ 2,1- b ]喹喔啉-11,4'-吡喃] -2'-胺的单锅四组分反应。茚三酮与1,2-二氨基苯反应生成茚并喹喔啉,然后被丙二酸烷基酯和各种α-亚甲基羰基化合物通过环化作用原位捕获,从而提供了多官能螺取代的茚并[2,1 - b ]喹喔啉-11 ,4'-吡喃-2'-胺。