1: 4-chloro-2-(chloromethyl)-3-methoxypyridine With sodium methylate in methanol; toluene T=15 - 25°C; 1 h; 2: 5-difluoromethoxy-2-mercapto-1H-benzimidazole in methanol; toluene 0.5 h; 3: With sodium methylate in methanol; toluene T=15 - 35°C; 1 h;

thionyl chloride in toluene T=15 - 25°C; 1 h;