An efficient one-pot synthesis of bis-indolylmethanes containing pyrazolyl catalyzed by Brønsted acidic ionic liquid under solvent-free conditions
作者:Chenjiang Liu、Chuanji Yu
DOI:10.1002/jhet.650
日期:2011.7
Brønstedacidicionicliquid [PyNCH2CO2H][HSO4] was found to be an effective catalyst for the condensation reactions of indoles with various 4‐formylpyrazoles to afford the corresponding bis‐indolylmethanes containing pyrazole under solvent‐free conditions. The satisfactory results were obtained with excellent yields, short reaction time, and simplicity in the experimental procedure. J. Heterocyclic
发现布朗斯台德酸性离子液体[PyNCH 2 CO 2 H] [HSO 4 ]是吲哚与各种4-甲酰基吡唑的缩合反应的有效催化剂,可在无溶剂条件下提供相应的含吡唑的双吲哚甲烷。以优异的产率,短的反应时间和简单的实验程序获得了满意的结果。J.杂环化学。(2011)。