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
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.