1: 2,6-dichlorobenzyl alcohol With sodium hydride in DMF (N,N-dimethyl-formamide) T=20°C; 0.5 h; 2: lithium-5-chloro-pyrazine-2-carboxylate in DMF (N,N-dimethyl-formamide) Heating / reflux;

1: With thionyl chloride 2 h; Heating / reflux; 2: With sodium azide in acetone T=20°C;