Shang, Xiaojun; Geng, Mingjiang; Wu, Liqiang, Asian Journal of Chemistry, 2012, vol. 24, # 2, p. 515 - 517
作者:Shang, Xiaojun、Geng, Mingjiang、Wu, Liqiang
DOI:——
日期:——
A novel one-pot three-component reaction: Synthesis of triheterocyclic 4H-pyrimido[2,1-b]benzazoles ring systems
作者:Ahmad Shaabani、Abbas Rahmati、Soheila Naderi
DOI:10.1016/j.bmcl.2005.08.101
日期:2005.12
A novel one-pot three-component condensation reaction of an aldehyde, beta-ketoester and 2-aminobenzimidazole or 2-aminobenzothiazole in 1,1,3,3-N,N,N',N'-tetramethylguanidinium trifluoroacetate as an ionic liquid is described. During the course of this reaction 4H-pyrimido[2,1-b]benzimidazoles or 4H-pyrimido[2,1-b]benzothiazoles are formed in high yields at 100 degrees C. The ionic liquid can be recovered conveniently and reused efficiently. (c) 2005 Elsevier Ltd. All rights reserved.