The aromatic perfluoroalkylation catalyzed by a copper(I) salt with bis(perfluoroalkyl)zinc reagents Zn(RF)2(DMPU)2, which were prepared and then isolated as a stable white powder from perfluoroalkyl iodide and diethylzinc, was accomplished to provide the perfluoroalkylated products in good‐to‐excellent yields. The advantages of this reliable and practical catalytic reaction are 1) air‐stable and easy‐to‐handle
Potassium 3-oxa-ω-fluorosulfonylperfluoropentanoate (FO2SCF2CF2OCF2CO2K), a low-temperature trifluoromethylating agent for organic halides; its α-carbon-oxygen bond fragmentation
The trifluoromethylation of organichalides with FO2SCF2CF2OCF2CO2K (1) in DMF can be accomplished at 45 °C which is advantageous for thermally sensitive substrates. α-Carbon-oxygenbondfragmentation of 1 and the related β-carbon-oxygen bond scission are discussed.
在DMF中用FO 2 SCF 2 CF 2 OCF 2 CO 2 K (1)对有机卤化物进行三氟甲基化可以在45°C的温度下完成,这对热敏性基材是有利的。α的-碳-氧键断裂1和相关的β碳上-氧键断裂进行了讨论。
The direct trifluoromethylation of aryl chlorides using Burton's reagent
作者:James H. Clark、Martin A. McClinton、Robert J. Blade
DOI:10.1039/c39880000638
日期:——
The copper–dibromodifluoromethane–N,N-dimethylacetamide reaction system trifluoromethylates electronically activated arylchlorides possessing ortho groups capable of interacting with the metal.
The trifluoromethylation of aryl iodides catalyzed by copper(I) salt with trifluoromethylzinc reagent prepared in situ fromtrifluoromethyliodide and Zn dust was accomplished. The catalytic reactions proceeded under mild reaction conditions, providing the corresponding aromatic trifluoromethylated products in moderate to high yields. The advantage of this method is that additives such as metal fluoride
The effect of charcoal on the trifluoromethylation of aryl chlorides using Burton's reagent
作者:James H. Clark、Martin A. McClinton、Craig W. Jones、Philip Landon、D. Bishop、R.J. Blade
DOI:10.1016/s0040-4039(01)93731-1
日期:1989.1
The reactivity of the trifluoromethylating system copper-dibromodifluoromethane-N, N-dimethylacetamide towards arylchlorides can be enhanced by the addition of charcoal.