Construction of Novel Tricyclic Fused-Ring Systems by the Multicomponent Reactions of Imidazo[1,5-a]pyridine Carbenes with Aromatic ortho-Dialdehydes and Electron-Deficient Alkynes
作者:Ying Cheng、Cai-Xia Yan、Zhong-Xin Sun
DOI:10.1055/s-0031-1289720
日期:2012.3
The multicomponent reactions of imidazo[1,5-a]pyridine carbenes with heterocyclic ortho-dialdehydes and electron-deficient alkynes were studied. While imidazo[1,5-a]pyridin-3-ylidenes reacted with furan-3,4-dicarbaldehyde and dimethyl acetylenedicarboxylate or dibenzoylacetylene to produce multifunctional difuro[3,2-b:3′,4′-d]azepines, the reaction of imidazo[1,5-a]pyridin-3-ylidenes with thiophene-3
研究了咪唑并[1,5- a ]吡啶碳烯与杂环邻二醛和缺电子炔烃的多组分反应。咪唑并[1,5 - a ]吡啶-3-亚胺与呋喃-3,4-二甲醛和乙炔二羧酸二甲酯或二苯甲酰基乙炔反应生成多功能二呋喃[3,2- b:3',4'- d ]氮杂咪唑并[1,5 - a ]吡啶-3-亚胺与噻吩-3,4-二甲醛和活化炔烃的反应得到呋喃[3,2- b ]噻吩并[3,4- d] a庚因衍生物。这项工作不仅提供了两种新型的三环稠合氮杂环庚烷,而且还扩展了N-杂环卡宾多组分反应在复杂的稠环体系构建中的应用。 多组分反应-卡宾酯-稠环系统-difuro [3,2- b:3',4'- d ] azepines-furo [3,2- b ] thieno [3,4- d ] azepines