| 摘要 |
NEW MATERIAL:A compound shown by the formula I(R is alkyl, alkenyl, alkoxyalkyl, cycloalkyl, haloalkyl, haloalkenyl or halocycloalkyl). EXAMPLE:Cyclohexanecarbonylamino-(1-pyrazoyl)acetonitrile. USE:A herbicide for paddy fields and an agricultural and horticultural fungicide. Having a wide application range as the herbicide for paddy fields, low phytotoxicity to paddy rice plants, low toxicity to fishes and showing preventing and remedying effects on blights and downy mildew or various crops with a small amount as the fungicide. PREPARATION:An acid chloride shown by the formula II(R<1> is R or cycloalkenyl) is reacted with aminoacetonitrile shown by the formula V to give a compound shown by the formula III, which is reacted with a halogenating agent such as Br2, etc., to give a halogenated intermediate shown by formula IV(X is halogen). Then, this compound is reacted with a pyrazole shown by the formula IV(X is halogen) to give a compound shown by the formula I.
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