Chinese Journal of Applied Chemistry

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Synthesis and Antifungal Activity of Schiff Bases of 5-Ethoxycarbonylmethylsulfanyl-1,2,4-triazole

YANG Qingcui1,2, SUN Xiaohong1,3*, LIU Yuanfa4, CHEN Bang4, SHEN Shengqiang3   

  1. (1.College of Chemical Engineering,Northwest University,Xi′an 710069,China;
    2.School of Science,Xi′an University of Architecture and Technology,Xi′an 710055,China;
    3.Chemical Research Institute,College of Chemical Engineering,Northwest University,Xi′an 710069,China;
    4.College of Chemistry and Materials Science,Northwest University,Xi′an 710069,China)
  • Received:2013-09-26 Revised:2013-12-31 Published:2014-07-10 Online:2014-07-10
  • Contact: SUN Xiao-hong

Abstract: Nine Shiff bases 3-methyl-4-(X-substituted-benzylideneamino)-5-ethoxycarbonyl methylsulfanyl-1,2,4-triazole a~i were synthesized from 3-methyl-4-amino-5-ethoxycarbonylmethyl sulfanyl-1,2,4-triazole and substituted aromatic aldehydes. The structures of synthetic compounds were confirmed by 1H NMR, IR, MS analyses. The crystal structure of 3-methyl-4-(4-hydroxybenzylideneamino)-5-ethoxycarbonylmethylsulfanyl-1,2,4-triazole h (CCDC:910927) was determined by X-ray diffraction as:C14H16N4O3S, Mr=320.37, Orthorhombic, P2(1)2(1)2(1)/n, a=0.9220(10) nm, b=1.5823(17) nm, c=2.1667(2) nm, V=3.161(6) nm3, Z=8, F(000)=1344. The antifungal activities of the new Schiff bases against four vegetable pathogens have been tested. The EC95 values of compounds d, e and f against Gibberlla saubinetii and Fusarium oxysporium f.s.p. niveum indicate that their antifungal activities are better than that of triadimefon.

Key words: Schiff base, methyl-amino-ethoxycarbonylmethylsulfanyl-triazole, synthesis, antifungal activity

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