Structurally diversified synthesis of 2,3-dihydroquinazolin-4-(1H)-ones from 2-aminobenzamides and 1,2-dicarbonyl compounds in ionic liquids catalyzed by iodine
作者:Jie Wang、Mei-Mei Zhang、Xiang-Shan Wang
DOI:10.1007/s11164-016-2807-1
日期:2017.5
Abstract A green procedure for the rapid diversification of quinazolin-4-(1H)-one scaffolds is described in this paper. Various types of 1,2-dicarbonyl compounds are treated with 2-aminobenzamides in ionicliquidscatalyzed by iodine and unexpectedly afford structurally diversified single-quinazoline derivatives. The recyclability of the ionicliquids makes this protocol to be an environmentally benign
Efficient and convenient synthesis of spiroindolinone-quinazolines induced by stannous chloride
作者:Yu Hu、Man-Man Wang、Hui Chen、Da-Qing Shi
DOI:10.1016/j.tet.2011.09.130
日期:2011.12
An efficient, convenient, one-potsynthesis of 1′H-spiro[indoline-3,2′-quinazoline]-2,4′(3′H)-dione derivatives was accomplished in good yields via the novel reductive cyclization of 2-nitrobenzamides and isatins mediated by SnCl2·2H2O system. A variety of substrates can participate in the process with good yields, making this methodology have broad applicability. The structure of compound 3c has been