sodium tetrahydroborate; nickel dichloride in methanol 3 h; Ambient temperature;

1: 76 percent / 1,5-diazabicyclo<4.3.0>non-5-ene / 12 h / Heating 2: 55 percent / NiCl2*6H2O, NaBH4 / methanol / 3 h / Ambient temperature View Scheme