(pentamethylcyclopentadienyl)Ru(1,5-cyclooctadiene)Cl; hydrogen; silver trifluoromethanesulfonate in dichloromethane T=20°C; P=7500.75 Torr; 0.5 h; Inert atmosphereAutoclave; SolventReagent/catalystConcentration; diastereoselective reaction;