Palladium-catalyzed coupling reactions of trifluoroacetimidoyl iodides with olefins and 1-alkynes
摘要:
Palladium-catalyzed coupling of trifluoroacetimidoyl iodides with olefins and 1-alkynes affords trifluoromethylated alpha, beta-unsaturated imines, which are transformed into nitrogen heterocycles bearing CF3-group.
A reductiveamination/cyclization approach towards biologically interesting trifluoromethylated four- to seven-membered ring lactams from simply prepared ω-trifluoromethylketoesters in good to excellent yields has been developed. In addition, trifluoromethylatedδ-aminoalcohols were also obtained directly from an unexpected reduction of the corresponding y-imino esters in the presence of an excess