1: 3.3 g / H2 / 5percent palladium-carbon / methanol; H2O / Ambient temperature 2: K2CO3 / H2O / Ambient temperature View Scheme

1: 3.3 g / H2 / 5percent palladium-carbon / methanol; H2O / Ambient temperature 2: K2CO3 / H2O / 3 h / Ambient temperature View Scheme

hydrogen; palladium on activated charcoal in methanol; water Ambient temperature;

1: 80 percent / H2 / 5percent Pd/C / Ambient temperature 2: 75 percent / K2CO3 / H2O / 3 h / Ambient temperature 3: 73 percent / NaBH4 / ethanol / Ambient temperature View Scheme

1: 80 percent / H2 / 5percent Pd/C / Ambient temperature 2: 75 percent / K2CO3 / H2O / 3 h / Ambient temperature 3: 73 percent / NaBH4 / ethanol / Ambient temperature 4: 80 percent / 1M TiCl4, Et3SiH / CH2Cl2 View Scheme