Citation: WANG Zi-Jian, SUN Xiao-Hong, LIU Yuan-Fa, CHEN Bang, JIN Ru-Yi, SHEN Sheng-Qiang, MA Hai-Xia. Synthesis, Crystal Structure and Biological Activity of 4-Amino-2,4-dihydro-5-((3,5-dimethyl-1H-pyrazol-1-yl)methyl)-3H-1,2,4-triazole-3-thione Schiff Base[J]. Chinese Journal of Structural Chemistry, ;2016, 35(2): 212-218. doi: 10.14102/j.cnki.0254-5861.2011-0892
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The target compound 1,2,4-triazole Schiff base containing pyrazole ring was synthesized by 4-amino-2,4-dihydro-5-((3,5-dimethyl-1H-pyrazol-1-yl)methyl)-3H-1,2,4-triazole-3- thione and 3,4,5-trimethoxy benzaldehyde. The structure was confirmed by IR, 1H NMR, H RMS, elemental analysis and single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group P1 with a = 7.8772(17), b = 8.2986(18), c = 15.392(3) Å, α = 93.360(4), β = 94.609(4), γ = 93.584(4)°, C18H22N6O3S, Mr = 402.47, V = 998.9(4) Å3, Z = 2, F(000) = 422, Dc = 1.335 g/cm3, μ = 0.194 mm-1, the final R = 0.0533 and wR = 0.1329 for 3517 observed reflections with I > 2σ(I). The preliminary bioassay results indicate that the target compound has good fungicidal activity against Gibberlla nicotiancola in EC50 value and F. O. f. sp. niveum in EC95 value.
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Keywords:
- Schiff base,
- 1,2,4-triazole,
- pyrazole,
- synthesis,
- structure,
- biological activity
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