1: p-TsOH / toluene / 5 h / Heating 2: NaBH4 / methanol / 0.75 h 3: 1.) BH3, 2.) aq. HCl / 1.) THF, reflux, 2 h, 2.) MeOH, reflux, 1 h 4: 79 percent / toluene / 3 h / Heating 5: 3.30 g / H2 / 5percent Pd/C / ethanol / 1.5 h / 2068.6 Torr View Scheme