| Condensation Reaction of 5,6-Dihydro-6-methyl-6-piperonyl-2H-pyran-2,4-dione,Ethyl Orthoformate and Substituted Anilines |
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| 引用本文： | You Ming WANG Ke HE 等. Condensation Reaction of 5,6-Dihydro-6-methyl-6-piperonyl-2H-pyran-2,4-dione,Ethyl Orthoformate and Substituted Anilines[J]. 中国化学快报, 2003, 14(3): 221-224 |
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| 作者姓名： | You Ming WANG Ke HE 等 |
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| 作者单位： | StateKeyLabofElemento-OrganicChemistry,NankaiUniversity,Tianjin300072 |
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| 摘 要： | Piperonyl methyl ketone was obtained by oxidizing isosafrole with hydrogen peroxide and formic acid.Dianion of ethyl acetoacetate reacted with piperonyl methyl ketone and 5,6-dihydro-6-methyl-6-piperonyl-2H-pyran-2,4-dione was prepared,which reacted with substituted anilines in the presence of ethyl orthoformate to obtain 3-anilinomethylene-5,6-dihydro-6-methyl-6-piperonyl-2H-pyran-2,4-diones.Their structure were confirmed by ^1HNMR and elemental analysis.
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| 关 键 词： | 异黄樟脑 5 6-二氧-6-甲基-6-胡椒基-2H-吡喃-2 4-二酮 结构 生物活性 核磁共振 元素分析 缩合反应 |
Condensation Reaction of 5, 6-Dihydro-6-methyl-6-piperonyl-2H- pyran-2,4-dione, Ethyl Orthoformate and Substituted Anilines |
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| You Ming WANG,Ke HE,Guo Feng ZHAO,Zheng Ming LI. Condensation Reaction of 5, 6-Dihydro-6-methyl-6-piperonyl-2H- pyran-2,4-dione, Ethyl Orthoformate and Substituted Anilines[J]. Chinese Chemical Letters, 2003, 14(3): 221-224 |
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| Authors: | You Ming WANG Ke HE Guo Feng ZHAO Zheng Ming LI |
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| Abstract: | Piperonyl methyl ketone was obtained by oxidizing isosafrole with hydrogen peroxide and formic acid. Dianion of ethyl acetoacetate reacted with piperonyl methyl ketone and 5, 6-dihydro-6-methyl-6-piperonyl-2H-pyran-2, 4-dione was prepared, which reacted with substituted anilines in the presence of ethyl orthoformate to obtain 3-anilinomethylene-5, 6- dihydro- 6-methyl-6-piperonyl-2H-pyran-2, 4-diones. Their structures were confirmed by 1HNMR and elemental analysis. |
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| Keywords: | Piperonyl methyl ketone isosafrole dianion. |
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