1: 61 percent / NaSH / methanol / 3 h / Heating 2: 50 percent / 2.) NaBH4 / 1.) benzene, reflux; 2.) methanol 3: 65 percent / hydrogen / 8percent Pd/C / ethanol / 20 °C 4: 33 percent / 2N HCl / ethanol / 8 h / Heating View Scheme

1: 61 percent / NaSH / methanol / 3 h / Heating 2: 50 percent / 2.) NaBH4 / 1.) benzene, reflux; 2.) methanol 3: 65 percent / hydrogen / 8percent Pd/C / ethanol / 20 °C 4: 34 percent / 2N HCl / ethanol / 8 h / Heating View Scheme