1: 100 percent / H2 / Pd/BaSO4 / toluene / 760 Torr 2: 53 percent / AcONa / 1 h / 150 °C 3: 61 percent / K2CO3 / acetone / 24 h / Heating 4: 10 percent / N,N-dimethyl-acetamide / 6 h / 200 °C 5: 73 percent / m-chloroperbenzoic acid (MCPBA) / diethyl ether / 6 h 6: 92 percent / p-toluenesulfonic acid / 2 h View Scheme

1: 100 percent / H2 / Pd/BaSO4 / toluene / 760 Torr 2: 53 percent / AcONa / 1 h / 150 °C 3: 61 percent / K2CO3 / acetone / 24 h / Heating 4: 10 percent / N,N-dimethyl-acetamide / 6 h / 200 °C View Scheme

1: 100 percent / H2 / Pd/BaSO4 / toluene / 760 Torr 2: 53 percent / AcONa / 1 h / 150 °C 3: 61 percent / K2CO3 / acetone / 24 h / Heating 4: 10 percent / N,N-dimethyl-acetamide / 6 h / 200 °C 5: 73 percent / m-chloroperbenzoic acid (MCPBA) / diethyl ether / 6 h View Scheme

hydrogen; Pd-BaSO4 in toluene P=760 Torr;

1: 100 percent / H2 / Pd/BaSO4 / toluene / 760 Torr 2: 11 percent / AcONa / 1 h / 150 °C View Scheme

1: 100 percent / H2 / Pd/BaSO4 / toluene / 760 Torr 2: 53 percent / AcONa / 1 h / 150 °C 3: 61 percent / K2CO3 / acetone / 24 h / Heating 4: 46 percent / N,N-dimethyl-acetamide / 6 h / 200 °C View Scheme

1: 100 percent / H2 / Pd/BaSO4 / toluene / 760 Torr 2: 26 percent / various solvent(s) / 6 h / 150 °C View Scheme