An Efficient Synthesis of Pyrazolo[3,4-<i>b</i>]pyridine Derivatives in Ionic Liquid
作者:Da-Qing Shi、Yao Zhou、Hai Liu
DOI:10.1080/00397910903471796
日期:2010.11.16
A series of 3-methyl-1,4,6-triaryl-1H-pyrazolo[3,4-b]pyridines was synthesized via the reaction of 3-methyl-1-phenyl-1H-pyrazol-5-amine and α,β-unsaturated ketones in ionic liquid without any catalyst. This protocol has the advantages of easier work-up, milder reaction conditions, high yields and environmentally benign procedure.
3-甲基-1-苯基-1H-吡唑-5-胺与α、3-甲基-1,4,6-三芳基-1H-吡唑并[3,4-b]吡啶反应合成了一系列3-甲基-1,4,6-三芳基-1H-吡唑并[3,4-b]吡啶,离子液体中的β-不饱和酮,无需任何催化剂。该协议具有更容易处理、更温和的反应条件、高产率和环境友好程序的优点。