Enantioselective epoxidation of unfunctionalized alkenes by a chiral monooxoruthenium( IV ) complex [RuL(bpy)O] ²⁺ {L = 2,6-bis[(4S,7R)-7,8,8-trimethyl-4,5,6,7-tetrahydro-4,7-methanoindazol-2-yl]pyridine; bpy = 2,2′-bipyridine}

A new chiral monooxoruthenium(IV) complex containing 2,6-bis[(4S, 7R)-7,8,8-trimethyl-4,5,6,7-tetrahydro-4,7-methanoindazol-2-yl]pyridine and 2,2′-bipyridine ligands is prepared and the X-ray crystal structure of its RuII–OH2 precusor determined; this RuIVO complex catalyses epoxidation of Unfunctionalized alkenes with promising enantioselectivity.