1: 100 percent / diethyl ether / 2 h / 5 °C 2: 67 percent / Li2CO3 / dimethylformamide / 1 h / 80 °C 3: NaBH4, CeCl3 / methanol / 0.17 h / 20 °C 4: 43 percent / 80percent aq. formic acid / 0.67 h / 70 °C 5: 100 percent / H2 / Pd/C / ethyl acetate View Scheme

1: 100 percent / diethyl ether / 2 h / 5 °C 2: 67 percent / Li2CO3 / dimethylformamide / 1 h / 80 °C 3: diethyl ether 4: 45 percent / 80percent aq. formic acid / 0.67 h / 85 °C 5: 100 percent / H2 / Pd/C / ethyl acetate View Scheme