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Citation: WANG You-Ming, LI Zheng-Ming, HAN Yu-Fen, JIA Bao-Jun, WANG Yu-Lin. Synthesis and Fungicidal Activity of 3-Heterocyclic aminomethylene-5,6-Dihydro-6-alkyl(aryl)-2H-pyran-2,4-diones[J]. Chinese Journal of Applied Chemistry, ;2001, 18(7): 524-527. shu

Synthesis and Fungicidal Activity of 3-Heterocyclic aminomethylene-5,6-Dihydro-6-alkyl(aryl)-2H-pyran-2,4-diones

1.
a Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071;
2.
b Hebei Tobacco Company, Shijiazhuang;
3.
c Shijiazhuang Cigarette Factory, Shijiazhuang

Received Date: 17 September 2000
Available Online: 27 March 2001
Fund Project: 国家自然科学基金资助课题(29832050) (29832050)

3-Heterocyclic aminomethylene-5,6-dihydro-6-alkyl(aryl)-2H-pyran-2,4-diones(3) were prepared by the condensation reaction of 6-alkyl(aryl)-5,6-dihydro-2H-pyran-2,4-diones with ethyl orthoformate and heterocyclic amines.A pair of conformational isomers was existed in products 3 due to the intramolecular hydrogen bonding.3 were tested in vitro against H.Oryzae, B.Cinerae and S.Sclerotiorum, showing some fungicidal activity.
- heterocyclic aminomethylene-dihydro-alkyl(aryl)-2H-pyran-dione,
- synthesis,
- condensation reaction,
- conformation isomer
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