Synthesis of 3-(quinoxalin-2-yl)-2H-chromen-2-ones under microwave irradiation |
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| Authors: | Jian-Feng Zhou Gui-Xia Gong Kun-Bo Shi Yu-Lan Zhu |
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| 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 |
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| 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  |
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| Keywords: | Heterocycles Cyclizations Catalysts Quinoxalines Microwave irradiation |
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