hydrogen fluoride; water in acetonitrile

hydrogen fluoride; water in acetonitrile

With  sodium hydride in  N,N-dimethyl-formamide T=85°C;   

Multi-step reaction with 2 steps 1: 85 percent / 2,6-lutidine / CH2Cl2 2: 60 percent / NaH / dimethylformamide / 85 °C  

Multi-step reaction with 5 steps 1: 85 percent / diethyl ether / -5 °C2: 97 percent / HCl / diethyl ether / -5 °C3: 96 percent / NaBH4 / methanol4: 85 percent / 2,6-lutidine / CH2Cl2 5: 60 percent / NaH / dimethylformamide / 85 °C