Divergent synthesis of 1,3,5-tri and 1,3-disubstituted pyrazoles under transition metal-free conditions
作者:Liyao Ma、Pengcheng Ou、Xueliang Huang
DOI:10.1039/d0ob01478h
日期:——
Pyrazole cores are common structural motifs existing in various agrochemicals and pharmaceuticals. Herein, a transition metal-free, three-component reaction of arylaldehydes, ethyl acrylate and N-tosylhydrazones is described, which leads to the formation of 1,3,5-trisubstituted and 1,3-disubstituted pyrazoles divergently under slightly different conditions.
吡唑核心是存在于各种农用化学品和药物中的常见结构基序。本文描述了芳醛、丙烯酸乙酯和N-甲苯磺酰腙的无过渡金属的三组分反应,该反应导致在稍有不同的条件下不同地形成 1,3,5-三取代和 1,3-二取代吡唑。