1: 79 percent / benzylidene-bis(tricyclohexylphosphine)-dichlororuthenium / CH2Cl2 / 35 °C 2: 71 percent / aq. AcOH / 1 h / 50 °C View Scheme

bis(tricyclohexylphosphine)benzylidene ruthenium(IV) dichloride in dichloromethane T=35°C;