Synthesis of 3-(quinoxalin-2-yl)-2H-chromen-2-ones under microwave irradiation |
| |
Authors: | Jian-Feng Zhou Gui-Xia Gong Kun-Bo Shi Yu-Lan Zhu |
| |
Affiliation: | (1) Department of Chemistry, Huaiyin Teachers College, Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, 223300 Huaian, China;(2) School of Chemistry and Chemical Engineering, Key Laboratory of Organic Synthesis of Jiangsu Province, Suzhou University, 215123 Suzhou, China |
| |
Abstract: | Abstract A facile procedure for the synthesis of quinoxalines is being reported starting from 3-(2-bromoacetyl)coumarins or 3-(2-bromobutanoyl)coumarins and substituted o-phenylenediamines. The reactions were carried out under catalyst-free and microwave irradiation conditions producing the title compounds in moderate to excellent yields in a short time with easy workup. The structures of all new compounds have been confirmed on the basis of their IR, 1H NMR, 13C NMR, and HRMS data. Graphical Abstract ![MediaObjects/706_2009_115_Figa_HTML.gif](/content/kpn00813378k1v0j/MediaObjects/706_2009_115_Figa_HTML.gif) |
| |
Keywords: | Heterocycles Cyclizations Catalysts Quinoxalines Microwave irradiation |
本文献已被 SpringerLink 等数据库收录! |
|