1: 62 percent / n-butyllithium / tetrahydrofuran / -78 °C 2: 76 percent / PhCH=Ru(PCy3)2Cl2 / CH2Cl2 / 12 h / Heating 3: 86 percent / H2 / RhCl(PPh3)3 / benzene / 20 °C / 1520 Torr 4: 92 percent / H2; acetic acid / 20 percent Pd(OH)2 on C / methanol; H2O / 12 h / 20 °C / 760 Torr 5: 96 percent / HCl / H2O / 12 h / 20 °C View Scheme

1: 62 percent / n-butyllithium / tetrahydrofuran / -78 °C 2: 76 percent / PhCH=Ru(PCy3)2Cl2 / CH2Cl2 / 12 h / Heating 3: 86 percent / H2 / RhCl(PPh3)3 / benzene / 20 °C / 1520 Torr 4: 92 percent / H2; acetic acid / 20 percent Pd(OH)2 on C / methanol; H2O / 12 h / 20 °C / 760 Torr View Scheme