Preparation of 1-aryl-2,2-difluoro enol esters via dehydrosulfonylation of α-(phenylsulfonyl)difluoromethylated benzoates
作者:Laijun Zhang、Ya Li、Jinbo Hu
DOI:10.1016/j.jfluchem.2007.03.004
日期:2007.7
1-Aryl-2,2-difluoro enolbenzoates 4 has been prepared from α-(phenylsulfonyl)-difluoromethylated benzoates 3, which can be readily obtained from the reactions between simple aldehydes and PhSO2CF2H (or TMSCF2SO2Ph). 2,2-Difluoro enol esters 4 are relatively more stable compounds than 2,2-difluoro enol sily ethers, and they promise to act as interesting fluorinated building blocks for further elaborations
由α-(苯磺酰基)-二氟甲基化的苯甲酸酯3制备了1-芳基-2,2-二氟烯醇苯甲酸酯4,可以通过简单的醛与PhSO 2 CF 2 H(或TMSCF 2 SO 2 Ph )。2,2-二氟烯醇酯4是比2,2-二氟烯醇硅醚相对更稳定的化合物,它们有望作为有趣的氟化结构单元进行进一步的修饰。
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.
Nucleophilic addition of difluoromethyl phenyl sulfone to aldehydes and various transformations of the resulting alcohols
作者:G.Patrick Stahly
DOI:10.1016/s0022-1139(00)81636-x
日期:1989.4
Nucleophilic addition of difluoromethyl phenyl sulfone (1) to various aldehydes occurred in a two phase system (50% aqueous sodium hydroxide, dichloromethane. Aliquat® 336) to give difluoro(phenylsulfonyl)methyl substituted alcohols (2/28). The product alcohol derived from para-tolualdehyde was converted to the difluoromethylated alcohol by desulfonylation and to the α, β, β-trifluorostyrene by a
Efficient nucleophilic difluoromethylation of aldehydes with (phenylsulfonyl)difluoromethylzinc and (phenylsulfonyl)difluoromethylcadmium reagents
作者:Fanzhou Jiang、Chuanfa Ni、Jinbo Hu
DOI:10.1016/j.jfluchem.2016.12.005
日期:2017.6
strategy for nucleophilic addition to aldehydes with difluoromethyl organometallic reagents has been developed by functionalizing the difluoromethyl moiety with the phenylsulfonyl group (SO2Ph). This electron-withdrawing group influences both the thermodynamic stability and the nucleophilicity of difluoromethyl organometallic reagents, which plays an important role in the nucleophilic difluoromethylation