Copper-catalyzed intramolecular C–N bond formation reaction of 3-amino-2-(2-bromophenyl)dihydroquinazolinones: synthesis of indazolo[3,2-b]quinazolinones
作者:Weiguang Yang、Leping Ye、Dayun Huang、Miaochang Liu、Jinchang Ding、Jiuxi Chen、Huayue Wu
DOI:10.1016/j.tet.2013.09.012
日期:2013.11
A copper-catalyzed intramolecular C-N bond formation reaction of 3-amino-2-(2-bromophenyl)dihydroquinazolinones has been developed for the synthesis of indazolo[3,2-b]quinazolinones in moderate to good yields. The structure of the newly synthesized indazolo[3,2-b]quinazolinones was unambiguously confirmed by X-ray single-crystal diffraction analysis. Moreover, a possible mechanism for the formation of indazolo[3,2-b]quinazolinones is discussed. (C) 2013 Elsevier Ltd. All rights reserved.