1: With sodium hydroxide; tetrabutylammomium bromide in dichloromethane; water T=25 - 30°C; 12 h; 2: With sodium hydroxide; sodium hypochlorite in dichloromethane; water T=0 - 8°C; 6 h; Product distribution / selectivity;

1: 2-hydroxymethyl-3,4-dimethoxypyridine hydrochloride With thionyl chloride in dichloromethane T=0 - 15°C; 1 h; 2: 5-difluoromethoxy-2-mercapto-1H-benzimidazole With sodium hydroxide; tetrabutylammomium bromide in dichloromethane; water T=10 - 30°C; pH=10 - 11; 12 h; 3: With sodium hydroxide; sodium hypochlorite in dichloromethane; water T=0 - 8°C; 6 h; Product distribution / selectivity;