lithium aluminium tetrahydride in diethyl ether T=0 - 5°C; 0.5 h;

potassium carbonate in N,N-dimethyl-formamide

1: 80.7 percent / MeONa / dimethylsulfoxide / 0.5 h / 130 °C 2: NaBH4, NiCl2 x 6 H20 / benzene; methanol / 0.5 h / Ambient temperature 3: pyridine / 1 h / Ambient temperature 4: 85.2 percent / anh. K2CO3, Cu, CuBr / nitrobenzene / 5 h / Heating 5: LiAlH4 / diethyl ether / 0.5 h / 0 - 5 °C View Scheme

1: pyridine / 1 h / Ambient temperature 2: 85.2 percent / anh. K2CO3, Cu, CuBr / nitrobenzene / 5 h / Heating 3: LiAlH4 / diethyl ether / 0.5 h / 0 - 5 °C View Scheme

1: NaBH4, NiCl2 x 6 H20 / benzene; methanol / 0.5 h / Ambient temperature 2: pyridine / 1 h / Ambient temperature 3: 85.2 percent / anh. K2CO3, Cu, CuBr / nitrobenzene / 5 h / Heating 4: LiAlH4 / diethyl ether / 0.5 h / 0 - 5 °C View Scheme

1: 85.2 percent / anh. K2CO3, Cu, CuBr / nitrobenzene / 5 h / Heating 2: LiAlH4 / diethyl ether / 0.5 h / 0 - 5 °C View Scheme