1: 81 percent / LiAlH4 / tetrahydrofuran / 1 h / Heating 2: 2.1 g / 30percent H2O2 / methanol / Heating 3: 67 percent / Ba(OH)2*8H2O / pyridine / 12 h / 105 °C 4: H2 / Unichema Prikat 9906 Ni / ethyl acetate View Scheme

1: 79 percent / H2 / 10percent Pd/C / ethyl acetate; acetic acid 2: 82 percent / LiAlH4 / tetrahydrofuran / 1 h / Heating 3: 2.85 g / 30percent H2O2 / methanol / Heating 4: 74 percent / KOH / pyridine / 4.5 h / 100 °C 5: H2 / 10percent Pd/C / ethyl acetate View Scheme