1: 77 percent / hydrogen / 10percent Pd/C / ethyl acetate / 4 h / Ambient temperature 2: LiAlH4 / tetrahydrofuran / 8 h / Heating View Scheme

1: 76 percent / hydrogen / 10percent Pd/C / ethyl acetate / 1 h / Ambient temperature 2: 51 percent / LiAlH4 / tetrahydrofuran / 8 h / Heating 3: 85percent H3PO4 / ethanol / Heating 4: 3 h / 270 - 280 °C View Scheme

1: 77 percent / hydrogen / 10percent Pd/C / ethyl acetate / 4 h / Ambient temperature 2: LiAlH4 / tetrahydrofuran / 8 h / Heating 3: 85percent H3PO4 / ethanol / Heating 4: 3 h / 270 - 280 °C View Scheme

hydrogen; palladium on activated charcoal in ethyl acetate 4 h; Ambient temperature;