作者:Jun Wen、Yun Fu、Ruo-Yi Zhang、Ji Zhang、Shan-Yong Chen、Xiao-Qi Yu
DOI:10.1016/j.tet.2011.09.074
日期:2011.12
A simple, highly efficient, and environmentally friendly method for the synthesis of substituted 1H-pyrazoles by one-pot condensation reaction of α,β-unsaturated carbonyl compounds with tosyl hydrazide in water was developed. The reaction system exhibited tolerance with various functional groups, Aromatic moiety with both electron-rich and electron-deficient substituents could give desired products
开发了一种简单,高效,环境友好的方法,该方法通过α,β-不饱和羰基化合物与甲苯磺酰肼在水中的一锅缩合反应合成取代的1 H-吡唑。该反应体系表现出对各种官能团的耐受性,同时具有富电子和缺电子取代基的芳族部分可以良好至极佳的收率得到所需的产物。