Synthesis and fungicidal activity against Rhizoctonia solani of 2-alkyl (alkylthio)-5-pyrazolyl-1,3,4-oxadiazoles (thiadiazoles)

被引：244
|
作者：
Chen, HS [1 ]
Li, ZM [1 ]
Han, YF [1 ]
机构：
[1] Nankai Univ, Inst Elementoorgan Chem, State Key Lab Elementoorgan Chem, Tianjin 300071, Peoples R China
来源：
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2000年 / 48卷 / 11期
关键词：
pyrazolyl-1,3,4-oxadiazole; pyrazolyl-1,3,4-thiadiazole; fungicide; rice sheath blight; Rhizoctonia solani;
D O I：
10.1021/jf991065s
中图分类号：
S [农业科学];
学科分类号：
09 ;
摘要：
Some series of 2-alkyl (alkythio)-5-((4-chloro)-3-ethyl-1-methyl-1H-pyrazole-5-yl)-1,3,4-oxadiazoles (thiadiazoles) were prepared as potential fungicides. Their fungicidal activity was evaluated against rice sheath blight, which is a major disease of rice in China. Structure-activity relationships for the screened compounds were evaluated and discussed. It was found that 5-(4-chloro-3-ethyl-1-methyl-1H-pyrazole-5-yl)-1,3,4-thiadiazole-2-thione has the higher fungicidal activity.
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页码：5312 / 5315
页数：4
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