1: 1H-1,2,4-triazol With tetrabutylammomium bromide; potassium hydroxide in water 0.25 h; Sonication; 2: 1,1-dibromomethane in water 2 h; Sonication;

sodium hydroxide; tetra(n-butyl)ammonium hydrogensulfate in water 8 h; Heatingphase transfer catalysis conditions;