Ten novel derivatives of 1-phenyl-5-[5-(substituted anilinocarbonylmethylthio)-4-phenyl-1,2,4- triazol-3-ylmethylthio]-tetrazole were synthesized rapidly in high yields by the reaction of N-(substituted phenyl)-2-chloryacetanilide (3) with 1-phenyl-5-(5-mercapto-4-phenyl-1,2,4-triazol-3-ylmethylthio)-tetrazo- le (2) under microwave irradiation and phase transfer catalysis conditions. Their structures were characterized by IR, ¹H NMR ,¹³C NMR spectra and elemental analysis. The plant growth regulating activity tests showed that some compounds have good activity at low concentrations as plant growth regulators.

Key words: phase transfer catalysis, microwave, biology activity, 1-phenyl-5-[5-(substituted anilinocarbonylmethylthio)-4-phenyl-1,2,4-tria-
zol-3-ylmethylthio]-tetrazole, 1-phenyl-5-(5-mercapto-4-phenyl-1,2,4-
triazol-3-ylmethylthio)-tetrazole