Regioselective Multi-component Synthesis of 7-Aryl-benzo[h][1,2,4]-triazolo[5,1-b]quinazoline-5,6-diones Catalyzed by n-Propylsulfonated γ-Al<sub>2</sub>O<sub>2</sub>
作者:Weilin Li、Shuanbao Tian、Liqiang Wu
DOI:10.5012/bkcs.2013.34.9.2825
日期:2013.9.20
n-propylsulfonated γ-Al2O3 as an efficient and versatile catalyst undersolvent-free conditions (Scheme 1). First, to achieve suitable conditions for the synthesis of 7-arylbenzo[h][1,2,4]-triazolo[5,1-b]quinazoline-5,6-diones, we tested the three-component reaction of benzaldehyde, 2hydroxy-1,4-naphthoquinone, and 3-amino-1,2,4-triazole as a simple model system at 100 °C under solvent free conditions using
Regioselective synthesis of 6-aryl-benzo[h][1,2,4]-triazolo[5,1-b]quinazoline-7,8-diones as potent antitumoral agents
作者:Liqiang wu、Chong Zhang、Weilin Li
DOI:10.1016/j.bmcl.2013.06.040
日期:2013.9
Three-component coupling of aldehyde, 2-hydroxy-1,4-naphthoquinone and 3-amino-1,2,4-triazole has been achieved using a catalytic amount of sulfamic acid under solvent free conditions to produce a novel series of 6-aryl-benzo[h][1,2,4]-triazolo[5,1-b]quinazoline-7,8-dione derivatives in good yields and with high regioselectivity. These compounds are found to exhibit potent antitumoral properties. (C) 2013 Elsevier Ltd. All rights reserved.