Divergent Synthesis of Trifluoromethyl Sulfoxides and β-SCF<sub>3</sub> Carbonyl Compounds by Tandem Trifluoromethylthiolation/Rearrangement of Allylic and Propargylic Alcohols
作者:Deng Zhu、Tong-Mei Ding、Hui-Yun Luo、Hua Ke、Zhi-Min Chen
DOI:10.1021/acs.orglett.0c02875
日期:2020.10.2
A selenium-catalyzed trifluoromethylthiolation/[2,3]-sigmatropic rearrangement of tertiary allylic and propargylic alcohols which could provide straightforward and facile access to trifluoromethyl sulfoxides was developed. Various allylic and allenic trifluoromethyl sulfoxides were obtained with moderate to excellent yields. Meanwhile, a Lewis acid mediated trifluoromethylthiolation/1,2-rearrangement
开发了硒催化的三烯丙基和丙炔醇的三氟甲基硫醇化/ [2,3]-σ重排,可提供直接而又容易获得的三氟甲基亚砜。获得各种烯丙基和烯丙基三氟甲基亚砜,具有中等至优异的产率。同时,路易斯酸介导的trifluoromethylthiolation / 1,2-重排合成β-SCF 3的羰基化合物也已实现。这两个串联反应的特征是反应条件温和且不含金属。在这两个反应中,揭示了亲电三氟甲基硫醇化的化学选择性。