1: 1H-1,2,4-triazol With tetrabutylammomium bromide; potassium carbonate in water; isobutyl methylketone 2 h; 2: toluene-4-sulfonic acid bis-(4-cyano-phenyl)-methyl ester in water; isobutyl methylketone T=20 - 30°C; 48 h; 3: With hydrogenchloride in water; isobutyl methylketone 1 h;