Transition-metal-free, visible-light induced cyclization of arylsulfonyl chlorides with 2-isocyanobiphenyls to produce phenanthridines
作者:Lijun Gu、Cheng Jin、Jiyan Liu、Hongyan Ding、Baomin Fan
DOI:10.1039/c4cc01487a
日期:——
A visible-light promoted transformation of 2-isocyanobiphenyls and arylsulfonyl chlorides for the synthesis of phenanthridines under oxidant-free and transition-metal-free conditions was described.
Metal-free photocatalyzed cross coupling of aryl (heteroaryl) bromides with isonitriles
作者:Xiangguang Li、Deqiang Liang、Wenzhong Huang、Huanli Sun、Lvsu Wang、Mengran Ren、Baoling Wang、Yinhai Ma
DOI:10.1016/j.tet.2017.10.074
日期:2017.12
A visible-light-catalyzed synthesis of 6-aryl substituted phenanthridines from aryl bromides and 2-isocyanobiphenyls at room temperature has been discovered. This metal-free cross-coupling reaction offers rapid and sustainable access to a series of structurally complex and diverse phenanthridines. The usage of inexpensive Rhodamine 6G as the catalyst with easy operation makes this protocol very practical. (C) 2017 Elsevier Ltd. All rights reserved.