The combo pack: Copper‐catalyzed trifluoromethylation of alkenes bearing an allylic proton combined with CCbondformation affords the title compounds in good to high yields (see scheme). The reactions are faster than allylic trifluoromethylation, especially in 1,4‐dioxane. A unique 1,6‐oxytrifluoromethylation occurred instead of an anticipated seven‐membered ring forming carbotrifluoromethylation
Perfluoroalkylation of Unactivated Alkenes with Acid Anhydrides as the Perfluoroalkyl Source
作者:Shintaro Kawamura、Mikiko Sodeoka
DOI:10.1002/anie.201604127
日期:2016.7.18
An efficient perfluoroalkylation of unactivated alkenes with perfluoro acid anhydrides was developed. Copper salts play a crucial role as a catalyst to achieve allylic perfluoroalkylation with the in situ generated bis(perfluoroacyl) peroxides. Furthermore, carboperfluoroalkylation of alkene bearing an aromatic ring at an appropriate position on the carbon side chain was found to proceed under metal‐free
Iron‐Catalyzed Alkene Trifluoromethylation in Tandem with Phenol Dearomatizing Spirocyclization: Regioselective Construction of Trifluoromethylated Spirocarbocycles
In the presence of Fe(III) complex and Bipy ligand, CF3-containing spirocarbocycles were conveniently obtained in 20–99% yields with high regioselectivity through Iron-catalyzedtrifluoromethylation of unactivated alkenes coupled with phenol dearomatizing spirocyclization.