1: 100 percent / 20percent aq. CH3COOH / 1 h / 90 °C 2: 88 percent / NaOEt / ethanol / 1 h / 20 - 25 °C 3: 100 percent / LiAlH4 / tetrahydrofuran / 4 h / 60 °C 4: H2 / 10percent Pd/C / methanol / 8 h / 60 °C View Scheme

1: 100 percent / 20percent aq. CH3COOH / 1 h / 90 °C 2: 88 percent / NaOEt / ethanol / 1 h / 20 - 25 °C 3: 100 percent / LiAlH4 / tetrahydrofuran / 4 h / 60 °C 4: H2 / 10percent Pd/C / methanol / 8 h / 60 °C 5: Et3N / methanol View Scheme