Cross-coupling of difluoromethylene-containing vinyl trimethylsilanes with aryl iodides mediated by a palladium catalyst and tris(diethylamino)sulfonium difluorotrimethylsilicate
作者:Dongpeng Wan、Feng-Ling Qing
DOI:10.1016/s0022-1139(98)00354-6
日期:1999.2
In the presence of tris(diethylamino)sulfoniumdifluorotrimethylsilicate (TASF) and allylpalladium chloride dimer, RCH(OX)CF2CHCHSi(CH3)3 (XH, Benzyl) reacts with aryl iodides to give the corresponding coupling products.
The addition of dibromodifluoromethane to (trimethylsilyl)acetylene and transformation of the products
作者:Feng-Ling Qing、Dong-Peng Wan
DOI:10.1016/s0040-4020(98)00895-3
日期:1998.11
Reaction of dibromodifluoromethane (1) with (trimethylsilyl)acetylene (2) initiated by ammonium persulfate/sodium formate () yield the addition-reduction product (3a), tribromide compound (3b) and the non-fluorinated compound (4) which could be separated by careful distillation. The reaction appears to be initiated by CO2•-. Indium mediated coupling of 3a with aldehydes gave the corresponding gem-difluorohomoallyl