One-Pot Synthesis of Indolo[2,3-c]quinolin-6-ones by Sequential Photocyclizations of 3-(2-Azidophenyl)-N-phenylacrylamides

Wei Zhang, Zhanshan Li, Weixia Wang, Xiaotian Zhang, Congcong Hu
2012 Synlett : Accounts and Rapid Communications in Synthetic Organic Chemistry  
A one-pot synthesis of indolo[2,3-c]quinolin-6(7H)-ones was achieved by sequential photocyclizations of 3-(2-azidophenyl)-N-phenylacrylamides in moderate to high yields. The reactions proceeded via photochemical cyclization of aryl azides to form N-phenylindol-2-carbamides and subsequent 6π-electrocyclic reaction and oxidative aromatization to afford the corresponding indolo[2,3c]quinolin-6(7H)-ones.
doi:10.1055/s-0032-1317703 fatcat:gighsj22bjhlvizjwnziuvnewa