Synthesis and Growth Regulatory Activity of Pyrazolesulfanyl- and Isoxazolesulfanyl-1H-[1,2,4]triazoles and Their Azinyl Derivatives

[摘要]：By cyclocondensation of 3-(1H-[ 12,4]triazol-3-ylsulfanyl)-pentane-2,4-dion with hydroxylamine, hydrazine, methylhidrazine, and arylsulfonyl-hydrazides, the 3-(3,5-dimethyl-isoxazol-4-ylsulfanyl)-1H-[1,2,4]triazole (2) and 3-(3,5-dimethyl-1-R-pyrazol-4-ylsulfanyl)-1H-[1,2,4]triazoles (3a-d) are synthesized. Under the action of quaternary ammonium salts of azines with limited heating in acetone they form a series of compounds (4a-h), which molecules simultaneously contain three different heterocyclic rings. Structures of compounds were confirmed by H-1 and C-13 NMR, MS, and elemental analysis. The plants growth regulatory activities of compounds 4a-h were investigated. Data of biological tests testify that these compounds can be of interest to search for new growth stimulators.

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