Highly Selective Activation of Vinyl C-S Bonds Over Aryl C-S Bonds in the Pd-Catalyzed Coupling of (E)-(β-Trifluoromethyl)vinyldiphenylsulfonium Salts: Preparation of Trifluoromethylated Alkenes and Dienes
作者:Hao Lin、Xicheng Dong、Yuxue Li、Qilong Shen、Long Lu
DOI:10.1002/ejoc.201200758
日期:2012.9
We describe the Suzuki coupling reaction of (E)-(beta-trifluoromethyl)vinyldiphenylsulfoniumsalts with arylboronic acid. The highly efficient and selective reaction provides a useful and mild method for the synthesis of trifluoromethylatedalkenes and dienes. Subsequent DFT studies showed that the oxidative addition transition state of the vinyl CS bond is much more favorable (11.7 kcal?mol1) than