Construction of pyrazolo[5,1-a]isoindol-8(3aH)-one derivatives via phosphine-catalyzed cyclization of electron-deficient alkynes and N-amino substituted phthalimide
作者:Qing-Fa Zhou、Fei-Fei Ge、Qing-Qing Chen、Tao Lu
DOI:10.1039/c5ra17267e
日期:——
A novel method for the synthesis of diversely functionalized pyrazolo[5,1-a]isoindol-8(3aH)-ones is developed via phosphine-catalyzed tandem Michael addition/intramolecular Morita–Baylis–Hillman reaction of electron-deficientalkynes and N-amino substituted phthalimide. This cyclization is operationally simple under metal-free reaction conditions.
通过膦催化串联迈克尔加成反应/缺电子炔烃和氮的分子内Morita-Baylis-Hillman反应,开发了一种新颖的合成功能多样的吡唑并[5,1- a ] isoindol-8(3 aH)-ones的新方法-氨基取代的邻苯二甲酰亚胺。在无金属的反应条件下,这种环化操作简单。