신규 3-히드록시 피라졸 유도체
    61.
    发明授权
    신규 3-히드록시 피라졸 유도체 失效
    新的3-羟基吡唑衍生物

    公开(公告)号:KR1019900002056B1

    公开(公告)日:1990-03-31

    申请号:KR1019870010966

    申请日:1987-09-30

    Inventor: 황기준

    Abstract: R1=H, halogen; R2=lower alkyl; R3=alkoxy, lower alkylthio, phenoxy, halogen-, nitrosubstd. phenoxy or thiophenoxy; R4=H, lower alkyl, substd. phenyl; X=O,S) to prevent rice insect and acarid are prepd. Thus 1.0g 1-methyl-5- trifloromethyl-3-hydroxy pyrazole, 1.24g diethylchlorophosphate and 0.72g triethyl amine in 10ml methylene chloride are stirred for 2 hr. The reactant are filtered with the mixt. of hexane and ethylacetate (4:1) to give 1.6g yellow I(R1=H; R2,R3,R4=Me; X=S).

    Abstract translation: R1 = H,卤素; R2 =低级烷基; R3 =烷氧基,低级烷硫基,苯氧基,卤素,亚硝基。 苯氧基或硫代苯氧基; R4 = H,低级烷基, 苯基; X = O,S),以防止水稻昆虫和螨虫食用。 由此将1.0g 1-甲基-5-三氟甲基-3-羟基吡唑,1.24g氯磷酸二乙酯和0.72g三乙胺的10ml二氯甲烷溶液搅拌2小时。 反应物用混合物过滤。 的己烷和乙酸乙酯(4:1),得到1.6g黄色I(R1 = H; R2,R3,R4 = Me; X = S)。

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