lithium; nickel dichloride in tetrahydrofuran T=20°C; Reduction;

sodium azide in N,N-dimethyl-formamide

Multi-step reaction with 4 steps 1: xylene / 48 h / Heating2: 1.) NaH, DMSO / 1.) RT, 10 min, 2.) 23 h3: H2, glacial AcOH / 5 percent Pd/C / methanol / 20 h / 2280 Torr4: 2 M HCl / tetrahydrofuran / 20 h / Ambient temperature  

With  triethylamine in  dichloromethane 5 h;