Construction of highly substituted pyrazole derivatives with P–C bond: access to racemic and enantioselective forms by conjugate addition of diarylphosphane oxides to α,β-unsaturated pyrazolones
作者:Zhi-Cong Geng、Jin-Xin Zhang、Ning Li、Jian Chen、Xiao-Fei Huang、Shao-Yun Zhang、Hai-Yan Li、Jing-Chao Tao、Xing-Wang Wang
DOI:10.1016/j.tet.2013.11.038
日期:2014.1
The synthesis of organophosphorus compounds is of great importance to industrial, agricultural, and pharmaceutical chemistry. In this paper, we have reported the synthesis of highly substituted pyrazole derivatives through P–C bond formation under catalyst-free conditions. On the other hand, the first catalytic asymmetric version of this reaction has also been developed under catalysis by an isosteviol
有机磷化合物的合成对工业,农业和制药化学非常重要。在本文中,我们报道了在无催化剂条件下通过P–C键的形成来合成高度取代的吡唑衍生物。另一方面,该反应的第一个催化不对称形式也已经在异戊二烯醇衍生的硫脲有机催化剂的催化下进行了开发。旋光性的含磷化合物已经以良好的化学产率获得,具有中等的对映选择性。