Efficient Difluoromethylation of Alcohols Using TMSCF<sub>2</sub>Br as a Unique and Practical Difluorocarbene Reagent under Mild Conditions
作者:Qiqiang Xie、Chuanfa Ni、Rongyi Zhang、Lingchun Li、Jian Rong、Jinbo Hu
DOI:10.1002/anie.201611823
日期:2017.3.13
difluoromethylation of alcohols using commercially available TMSCF2Br (TMS=trimethylsilyl) as a unique and practical difluorocarbene source is developed. This method allows primary, secondary, and even tertiary alkyl difluoromethyl ethers to be synthesized under weakly basic or acidic conditions. The reaction mainly proceeds through the direct interaction between a neutral alcohol and difluorocarbene