- Pyrazole formaldoxime ether compound as well as preparation method and application thereof
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The invention discloses a pyrazole formaldoxime ether compound as well as a preparation method and application thereof. The structural formula of the pyrazole formaldoxime ether compound is shown as the following formula I shown in the specification, wherein in the formula I, R1 represents at least one of hydrogen, C1-C6 alkyl, C1-C6 alkyl monosubstituted by halogen and C1-C6 alkyl polysubstitutedby halogen; R2 represents at least one of hydrogen, C1-C6 alkyl, C1-C6 alkyl monosubstituted or polysubstituted by halogen, aryl and substituted aryl; R3 represents at least one of phenyl, benzyl, substituted benzyl, substituted phenyl, an unsubstituted nitrogen and/or oxygen-containing heterocyclic group, a substituted nitrogen and/or oxygen-containing heterocyclic group, an unsubstituted C3-C8cycloalkyl group and a substituted C3-C8 cycloalkyl group. The pyrazole formaldoxime ether compound takes oxime ether as a main skeleton structure, is simple in preparation method, can be used for efficiently preventing and treating fungal diseases and oomycete diseases of farmland crops, and can be used for disease resistance management.
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- METHOD FOR PREPARING PYRAZOLECARBOXYLIC ACID DERIVATIVE, AND INTERMEDIATE THEREOF
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Provided are a preparation method for synthesizing a pyrazolecarboxylic acid derivative of the following formula (I), which is suitable for industrial production, and an intermediate as shown by the following formula (II). The method is high in reaction yield in each step, low in waste gas and waste water and low in cost, and requires no special reaction equipment.
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Paragraph 0151-0154
(2018/07/31)
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- A process for preparing pirazole carbaldehyde compounds
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The present invention relates to a method for preparing pirazole carbaldehyde compounds and, more specifically, to a novel method for preparing 3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carbaldehyde and 3-(trifluoromethyl)-1-methyl-1-H-pyrazole-4-carbaldehyde which are useful as intermediates for producing pyrazole carboxanilide disinfectants such as isopyrazam, sedaxane, bixafen, etc. According to the present invention, production costs of pyrazole carboxanilide disinfectants can be reduced.COPYRIGHT KIPO 2017
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Paragraph 0053; 0058-0059
(2018/02/24)
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- PROCESS FOR PREPARING 1-ALKYL-3-FLUOROALKYL-1H-PYRAZOLE-4-CARBOXYLIC ACID CHLORIDES
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The present invention relates to a novel method for preparing 1-alkyl-3-fluoroalkyl-1H-pyrazole-4-carbonyl chlorides, a useful precursor for the preparation of fungicides, by means of reductive dehalogenation, starting from N-alkyl-3-haloalkyl-5-halopyrazolecarbaldehyde.
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- Process for the production of pyrazoles
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The present invention relates to novel processes for the production of compounds of formula I
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Page/Page column 9; 15
(2009/01/24)
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