2: CrO3, Py / CH2Cl2 3: (i) LiAlH4, THF, (ii) MnO2, CHCl3, PE View Scheme

(η5-C5Ph5)Ru(CO)2Cl in toluene T=60°C; 24 h; Inert atmosphereSchlenk techniqueEnzymatic reaction; Reagent/catalyst; enantioselective reaction;