- Preparative method for carboxylic acids
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A preparative method for carboxylic acids is disclosed in the present invention. The method is characterized in that: compounds (II) are reacted in the presence of hydrogen peroxide and base to produce target products (I), as represented by the following reaction scheme: wherein R1 is aryl, pyridyl, pyrimidyl, pyridazinyl, pyrazinyl, benzothienyl, benzofuranyl, quinolinyl, isoquinolinyl, thiadiazolyl, C1-6 alkyl, C3-6 cycloalkyl, C2-6 alkenyl, C2-6 alkynyl and hydrogen; R2 is alkoxycarbonyl, alkylaminocarbonyl, aminocarbonyl, alkylthiolcarbonyl, cyano, sulfonyl, sulfinyl, carbonyl, aldehyde, carboxyl, nitro, alkyl and hydrogen; R3 is alkoxycarbonyl, alkyl amido carbonyl, aminocarbonyl, cyano, sulfonyl, sulfinyl, carbonyl, carboxyl and nitro. The present invention has the following main benefits: cheap and readily available starting materials, safe processes, high yield, good quality, which facilitates industrial production.
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Paragraph 0036
(2018/02/03)
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- COMPOUNDS FOR TREATING NEURODEGENERATIVE DISEASES
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The invention provides novel tricyclic compounds of Formula (I) that inhibit β- secretase cleavage of APP and are useful as therapeutic agents for treating neurodegenerative diseases.
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Paragraph 00231
(2013/10/21)
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- Herbicides
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Compounds of formula (I) in which A is ═N— or (a); W is a group (W1), (W2) or (W3); R11is hydrogen, fluorine, chlorine, bromine or methyl; and R1to R5, R13,n1and n13are as defined in claim 1, and the pyrazole N-oxydes, agrochemically tolerated salts and stereoisomers of these compounds of formula (I), have good pre- and post-emergent selective herbicidal properties. The preparation of these compounds and their use as herbidical active substances are described.
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- Pyrazole derivatives as herbicides
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Compounds of the following formula I wherein wherein all variables are as defined in the specification and the pyrazoleN-oxides, agrochemically acceptable salts and stereisomers thereof useful as herbisdes.
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- Novel herbicides
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The invention relates to novel herbicidally active cyclohexanediones of formula I or I' STR1 in which R1 and R2 independently of one another are each hydrogen; halogen; nitro; cyano; C1 -C4 alkyl; C1 -C4 alkoxy; C1 -C4 alkyl-S(O)n --; COR8 ; C1 -C4 haloalkoxy; or C1 -C4 haloalkyl; R3, R4 and R5 independently of one another are each hydrogen; C1 -C4 alkyl; or phenyl or benzyl each unsubstituted or substituted by up to three identical or different substituents from halogen, nitro, cyano, C1 -C4 alkyl, C1 -C4 alkoxy, C1 -C4 alkyl-S(O)n --, C1 -C4 haloalkyl, C1 -C4 haloalkyl-S(O)n -- and C1 -C4 haloalkoxy; R6 is hydrogen; C1 -C4 alkyl, C1 -C4 alkoxycarbonyl; or cyano; R7 is OH; or O? M≈ ; R8 is OH; C1 -C4 alkoxy; NH2 ; C1 -C4 alkylamino; or di-C1 - C4 alkylamino; n is 0, 1 or 2; M+ is a cation equivalent of a metal ion or of an ammonium ion that is unsubstituted or substituted by up to three C1 -C4 alkyl, C1 -C4 hydroxyalkyl or C1 -C4 alkoxy-C1 -C4 alkyl groups, to herbicidal compositions, to processes for the preparation of novel compounds and to novel intermediates and the preparation thereof.
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- 2-Substituted-5-trifluoromethylpyridines and process for producing the same
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A 2-substituted-5-trifluoromethylpyridine compound represented by Formula (I): STR1 wherein X is a hydrogen atom or a halogen atom, and Y is a cyano group or a carboxy group, provided that Y is a cyano group, then X is a halogen atom, or a salt thereof, and a process for the production of the same. This compound is useful as an intermediate for the production of various fine chemicals.
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