An efficient and optically active, bifunctional tetraaza ligand (2S)-N-(1R,2R)-2-[(S)-pyrrolidine-2-carboxamido]-1,2-diphenylethyl}pyrrolidine-2-carboxamide has been developed for the addition of trimethylsilyl cyanide (TMSCN) to ketones. The bifunctionalcatalyst system based on a monometallic titanium complex was found to be a highly enantioselectivecatalyst to provide O-TMS cyanohydrins with up