Syntheses of trifluoroethylated unsymmetrical 1,3-diynes by using 1,1-dichloro-2,2,2-trifluoroethane
文摘
A hydrochlorofluorocarbon (HCFC) is used to synthesize 2,2,2-trifluoroethyl diynes. The C–C bond formation is promoted by copper and ethanolamine. Two examples of converting the diynes to heterocycles are demonstrated.