Rh(III)-Catalyzed C–H Amidation of 2-Arylindoles with Dioxazolones: A Route to Indolo[1,2-<i>c</i>]quinazolines
作者:Xiaogang Wang、Jin Zhang、Di Chen、Bo Wang、Xiufang Yang、Yangmin Ma、Michal Szostak
DOI:10.1021/acs.orglett.9b02615
日期:2019.9.6
Rhodium(III)-catalyzed C-H amidation of 2-arylindoles with dioxazolones for the synthesis of indolo[1,2-c]quinazolines is reported. The reaction is compatible with a wide range of electronically diverse 2-arylindoles and dioxazolones, providing indolo[1,2-c]quinazolines in high to excellent yields. Most notably, the combination of this Rh-catalyzed C-H amidation and intramolecular N-H/N-C(O) cyclization
报道了铑(III)催化2-芳基吲哚与二恶唑酮的CH酰胺化反应,合成吲哚[1,2-c]喹唑啉。该反应可与多种电子上不同的2-芳基吲哚和二恶唑酮兼容,从而可以高收率或优异的收率获得吲哚并[1,2-c]喹唑啉。最值得注意的是,这种Rh催化的CH酰胺化和分子内NH / NC(O)环化的结合使迄今为止最直接的直接途径成为吲哚并[1,2-c]喹唑啉。公开了这些高价值杂环的机理研究和抗肿瘤活性的评估。