1: 4-nitro-1H-indazole With sodium hydride in DMF (N,N-dimethyl-formamide) T=20°C; 0.166667 h; 2: trimethylsilyl ethoxymethyl chloride in DMF (N,N-dimethyl-formamide) T=20°C; 1.5 h;

hydrogen; palladium 10 on activated carbon in ethanol P=2585.81 Torr; 1 h;