[Ru2(p-PriC6H4Me)2(μ-Cl)Cl]2; lipase TL from Pseudomonas stutzeri; potassium tert-butylate; 1,4-di(diphenylphosphino)-butane in tetrahydrofuran T=20°C; 24 h; Inert atmosphereSchlenk techniqueEnzymatic reaction; enantioselective reaction;