A nickel-catalyzed aminofluoroalkylative cyclization of unactive alkenes with iododifluoromethyl ketones was developed to construct versatile difluoroalkylated Nitrogen-containing heterocycles including aziridines, pyrrolidines and piperidines in moderate to high yields. This method features a broad substrate scope and has been demonstrated on gram scale.
A method for stereoselectivesynthesis of α,α-difluoro-γ-iodo-β,γ-alkenyl ketones via radical difluoroacetylation of iododifluoromethyl ketones with terminal and internal alkynes was reported. This methodology provides a straightforward access to 3,3-disubstitued allylic difluorides.
Copper-mediated radical cyclization of naphthalenyl iododifluoromethyl ketones with olefins was successfully developed to generate a series of unprecedented gem-difluorodihydrophenanthrenones, especially 2,2-difluoro-3,4-dihydrophenanthren-1(2H)-one derivatives. This strategy features the use of cheap copper powder and excellent regioselectivity and diastereoselectivity, thus providing a facile approach