Résumé In this paper, an effective procedure is described for the synthesis of novel indoles containing highly polarized double bonds. The strategy involves the preparation of (indolylmethyl)malononitriles via the one-pot three-component reaction of an aldehyde, malononitrile and indole in the presence of Zn(OAc)2/NaOAc under silent and ultrasonic conditions. The reaction further proceeds through oxidative elimination under solvent-free conditions in the presence of Ca(OCl)2 to furnish indolylacrylonitriles in high yields and short reaction times. Supplementary Materials: Supplementary material for this article is supplied as a separate file: mmc1.doc
摘要 本文介绍了一种合成含有高度极化双键的新型
吲哚的有效方法。该策略包括在无声和超声条件下,在 Zn(OAc)2/NaOAc 的存在下,通过醛、
丙二腈和
吲哚的单锅三组分反应制备 (
吲哚甲基)
丙二腈。在 Ca(OCl)2 存在下,反应进一步在无溶剂条件下进行氧化消除,从而以较高的产率和较短的反应时间生成
吲哚丙烯腈。 补充材料: 本文的补充材料以单独文件形式提供:mmc1.doc