Graphene-supported organoiridium clusters catalyze -alkylation of amines hydrogen borrowing reaction.

Graphene-supported organic iridium clusters (GSOICs) have been designed, prepared, characterized, and used for -alkylation of amines hydrogen borrowing reactions. Structural analysis data (including IR, XPS, TEM and EDS) show that organoiridium clusters are uniformly formed on the surface of graphene, and the grain size of GSOIC is between 1 and 3 nm. After being activated by the auxiliary ligand TMPP (tris(4-methoxyphenyl)phosphine), GSOIC showed excellent catalytic performance for hydrogen borrowing reaction, with its turnover frequency (TOF) reaching 13.