Nucleophilic (Phenylsulfonyl/arylthio)difluoromethylation of Aldehydes with TMSCF<sub>2</sub>Br: A Three-Component Strategy
作者:Qiqiang Xie、Ziyue Zhu、Chuanfa Ni、Jinbo Hu
DOI:10.1021/acs.orglett.9b03520
日期:2019.11.15
(phenylsulfonyl/arylthio)difluoromethylation of aldehydes with TMSCF2Br was developed. The reaction proceeds through in situ generation of difluorocarbene, which is captured by PhSO2Na or ArSNa to form the corresponding PhSO2CF2- or PhSCF2- anions, followed by nucleophilic addition to aldehydes to give the desired difluoromethylated products.
建立了一种用TMSCF2Br进行醛类亲核(苯磺酰基/芳硫基)二氟甲基化的有效方法。该反应通过原位产生二氟卡宾而进行,该二氟卡宾被PhSO 2 Na或ArSNa捕获以形成相应的PhSO 2 CF 2-或PhSCF 2-阴离子,然后亲核加成至醛中以得到所需的二氟甲基化产物。