Abstract For the past few years, transition-metal-catalyzed trifluoromethylation of olefins has been rapidly developing and has provided various types of organofluorine compounds containing a C(sp3) CF3 bond. In this review, we will concisely summarize recent development of trifluoromethylation of C C bonds effected by a combination of transition metal catalysis and electrophilic trifluoromethylating reagents, such as Umemoto's and Togni's reagents.