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Pyrazoliumforbindelser having fungicidal activity against phytopathogenic fungi and with herbicidal activity.
Pyrazoliumforbindelser having fungicidal activity against phytopathogenic fungi and with herbicidal activity.
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机译:具有对植物病原性真菌的杀真菌活性并具有除草活性的吡唑类杀虫剂。
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摘要
1435639 Pyrazolium compounds AMERICAN CYANAMID CO 15 Aug 1974 [21 Sept 1973 (3)] 36036/74 Heading C2C The invention comprises the compounds of the formula wherein R 1 and R 2 are each C 1 -C 4 alkyl, R 3 is cycloalkylmethyl, cycloalkyl, methyl-substituted cycloalkyl, cycloalkenyl, methyl-substituted cyclalkenyl, (C 2 -C 11 ) alkyl or R 4 is cycloalkylmethyl, cycloalkyl, methylsubstituted cycloalkyl, cycloalkenyl, methylsubstituted cycloalkenyl, (C 2 -C 11 ) alkyl or in which the cycloalkyl and cycloalkenyl groups of R 3 and R 4 have 3-7 carbon atoms; Y, YSP1/SP, Z and ZSP1/SP are each H, halogen, NO 2 , CH 3 S, CH 3 SO 2 , CN, COOH, carbo (C 1 -C 4 ) alkoxy, (C 1 -C 4 ) alkyl, (C 1 -C 4 ) haloalkyl containing 1 to 4 halogen atoms or (C 1 -C 4 ) alkoxy; X is anion with a charge of from 1 to 3; n is 0 or 1 and m is 1, 2 or 3. They may be obtained by reacting a diketone of the formula with a hydrazine of the formula RNHNH 2 to form a pyrazole which is then alkylated to give the required pyrazolium sa wherein R is H or C 1 -C 4 alkyl. Herbicidal compositions comprise the above compounds of Formula I in association with conventional carriers or diluents and optionally surfactants. They have selective control and are useful both as pre-emergence and postemergence herbicides. The diketones of Formula II above may be obtained by reacting a methyl ketone of the formula R 3 COCH 3 with an alkyl carboxylic acid ester of the formula
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