1: 47 percent / NaH / 1,2-dimethoxy-ethane / 2 h / Heating 2: 98 percent / H2, morpholine / 5 percent Rh/C / ethanol; methanol / 4 h / 18100.2 Torr / Ambient temperature 3: 86 percent / HCOONa / 3 h / Heating View Scheme

1: 47 percent / NaH / 1,2-dimethoxy-ethane / 2 h / Heating 2: 98 percent / H2, morpholine / 5 percent Rh/C / ethanol; methanol / 4 h / 18100.2 Torr / Ambient temperature 3: 86 percent / HCOONa / 3 h / Heating 4: 47 percent / K2CO3, Cu, CuBr / dimethylsulfoxide / 24 h / 160 °C 5: 92 percent / 6 M aq. NaOH / ethanol / 1 h / Heating View Scheme