Cesium Carboxylate-Promoted Iridium Catalyzed C–H Amidation/Cyclization with 2,2,2-Trichloroethoxycarbonyl Azide
作者:Tao Zhang、Zhen Wang、Xuejiao Hu、Meng Yu、Tianning Deng、Guigen Li、Hongjian Lu
DOI:10.1021/acs.joc.6b00818
日期:2016.6.3
An Ir(III)-catalyzed direct C–H amidation/cyclization of benzamides using 2,2,2-trichloroethoxycarbonyl azide (TrocN3) as the aminocarbonyl source is reported. With the aid of cesium carboxylate, the reactions proceed efficiently and with high regioselectivity, producing various functionalized quinazoline-2,4(1H,3H)-diones, which are important building blocks and key synthetic intermediates for biologically
据报道,使用2,2,2-三氯乙氧羰基叠氮化物(TrocN 3)作为氨基羰基来源,Ir(III)催化苯甲酰胺的直接CH–H酰胺化/环化反应。在羧酸铯的帮助下,反应有效地进行并且具有高区域选择性,从而产生各种官能化的喹唑啉-2,4(1 H,3 H)-二酮,它们是重要的构建基块和重要的合成中间体,是生物学和医学上重要的化合物。在反应过程中,两个新的C–N键通过打破C–H和N–H键序列而形成。