Microwave Assisted Synthesis of 3,3',3″,3'″-o-,p-Phenylenedi-methylidinetetrakis-(4-hydroxy-2H-1-benzopyran-2-one) |
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基金项目: | Supported by the National Natural Science Foundation of China(No.20672091). |
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摘 要: | Under microwave irradiation,2,2'-alkoxy-bridging or 4,4'-alkoxy-bridging dibenzaldehydes reacted with 4-hydroxycoumarin in DMF to give a series of 3,3',3″,3'″-o-and 3,3',3″,3'″-p-phenylenedimethylidinetetrakis-(4-hydroxy-2H-1-benzopyran-2-ones) in moderate yields.The structures of the synthetic coumarin derivatives were characterized with IR,1H NMR and MS spectroscopy as well as X-ray single crystallography.
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收稿时间: | 2010-01-21 |
Microwave Assisted Synthesis of 3,3',3″,3'″-o-, p-Phenylenedi-methylidinetetrakis-(4-hydroxy-2H-1-benzopyran-2-one) |
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Authors: | AN Lin LIU Dong-mei WANG Jin-xiang and YAN Chao-guo |
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Institution: | 1. College of Pharmacy, Xuzhou Medical College, Xuzhou 221004, P. R. China;
2. College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China |
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Abstract: | Under microwave irradiation, 2,2'-alkoxy-bridging or 4,4'-alkoxy-bridging dibenzaldehydes reacted with 4-hydroxycoumarin in DMF to give a series of 3,3',3″,3'″-o- and 3,3',3″,3'″-p-phenylenedimethylidinetetrakis-(4- hydroxy-2H-1-benzopyran-2-ones) in moderate yields. The structures of the synthetic coumarin derivatives were characterized with IR, 1H NMR and MS spectroscopy as well as X-ray single crystallography. |
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Keywords: | Microwave irradiation One-pot reaction Coumarin Benzopyran-2-one |
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