An eco-safe approach to benzopyranopyrimidines and 4H-chromenes in ionic liquid at room temperature |
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Authors: | Amit Kumar Gupta Kumkum Kumari Neetu Singh Dushyant Singh Raghuvanshi Krishna Nand Singh |
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Affiliation: | Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi 221 005, India |
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Abstract: | An environmentally benign, ionic liquid promoted multicomponent protocol to benzopyrano(2,3-d)pyrimidines and 4H-chromenes has been developed at room temperature. Results of the reaction depend on the nature of the nucleophile used in the reaction. Secondary amines result in the formation of benzopyrano(2,3-d)pyrimidines, whereas thiols give rise to 4H-chromenes under the same set of reaction conditions. |
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