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| 以(1)为底物,分别与苯甲醛衍生物(或杂环芳香醛)通过“三步一锅法”制备化合物2),该方法简化了实验操作,缩短实验步骤,而且产率高。化合物2在多聚磷酸 (PPA)下发生了分子内闭环反应,以55.4~79.6%的总收率得到了新型的闭环产物c和d的结构通过 IR, 1H NMR, MS和元素分析证实。 |
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3楼2011-04-13 18:53:51
594306435(金币+10, 翻译EPI+1): 谢谢 2011-04-14 14:01:30
| The compound 2 was prepared with "three step -one pot law" method by taking (1) as the substrate reacted separatelty with benzaldehyde derivative and heterocyclic ring fragrant aldehyde.In this method ,the experiment operation was simplified, the laboratory procedure was reduced and the production rate was improved.The intramolecular ring-closing reaction happend within the compound 2 under phosphoric acid (PPA), gaining new closed loop product c and the d structure with 55.4~79.6% total recoveries through IR, 1H NMR, MS and the ultimate analysis confirmation. |
2楼2011-04-13 18:33:47










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