- Direct enantioseparation of nitrogen-heterocyclic pesticides on cellulose-based chiral column by high-performance liquid chromatography
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The enantiomeric separation of eight pesticides including bitertanol (1), diclobutrazol (2), fenbuconazole (3), triticonazole (4), imazalil (5), triapenthenol (6), ancymidol (7), and carfentrazone-ethyl (8) was achieved, using normal-phase high-performanc
- Chai, Tingting,Yang, Wenwen,Qiu, Jing,Hou, Shicong
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- Process for producing optically active alcohol
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The process for producing an optically active alcohol of the present invention comprises allowing (A) an optically active amino alcohol represented by the general formula (I) STR1 (R1 is an aryl group, R2 is a lower alkyl group, Rsu
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- Use of diphenyl ether derivatives for the desiccation and abscission of plant organs
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The use of diphenyl ether derivatives of the general formula I STR1 where A is a radical STR2 where R1 is hydrogen, an alkali metal or alkaline earth metal ion, substituted or unsubstituted ammonium, alkyl of from 1 to 4 carbon atoms or alkoxycarbonylalkyl of a total of 1 to 6 carbon atoms and R2 is alkyl of from 1 to 4 carbon atoms, for the desiccation and abscission of plant organs.
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- Method for producing an optically active azolyl-α β-unsaturated alcohol
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The present invention relates to a method for producing optically active alcohol derivatives, which are useful as fungicides, herbicides or plant growth regulators, represented by the formula, STR1 by carrying out the asymmetric reduction of a ketone compound represented by the formula, STR2 with a boron hydride-reducing agent modified with an optically active amino alcohol represented by the formula, STR3 and also relates to the boron hydride type compound obtained by reacting the above optically active amino alcohol with a boron hydride compound and its production method.
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- Process for the preparation of the (-)-antipode of (E)-1-cyclohexyl-4, 4-dimethyl-3-hydroxy-2-(1,2,4-triazol-1-yl)-pent-1-ene
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A process for the preparation of the (-)-antipode of (E)-1-cyclohexyl-4,4-dimethyl-3-hydroxy-2-(1,2,4-triazol-1-yl)-pent-1-ene of the formula STR1 which comprises reacting the (E)-isomer of 1-cyclohexyl-4,4-dimethyl-2-(1,2,4-triazol-1-yl)-pent-1-en-3-one of the formula STR2 (a) with boron hydride in the presence of an optically active proline derivative of the formula STR3 in which, R1 is alkyl, phenyl or benzyl, or (b) with a complex borohydride in the presence of an acid addition salt of the optically active proline derivative, in the presence of a diluent at a temperature between about -70° C. and +60° C. The proline derivatives are also new and are produced from S-proline esters. The end product is a known plant growth regulant.
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- Asymmetrically modified boron hydride type compound, a production method thereof, and a method for producing an optically active alcohol derivative by the use thereof
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The present invention relates to an asymmetrically modified borohydride type compound obtained by reacting an optically active amino alcohol represented by the formula, STR1 or its salt with an acid with a borohydride compound; its production method; and a method for producing an optically active alcohol derivative useful as fungicides, herbicides or plant growth regulators and represented by the formula, STR2 which comprises asymmetrically reducing a ketone compound represented by the formula, STR3 with the asymmetrically modified borohydride type compound.
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- (-)-Antipode of (E)-1-cyclohexyl-4,4-dimethyl-3-hydroxy-2-(1,2,4-triazol-1-yl)-pent-1-ene
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(-)-Antipode of (E)-1-cyclohexyl-4,4-dimethyl-3-hydroxy-2-(1,2,4-triazol-1-yl)-pent-1-ene of the formula STR1 a plant growth regulant containing the same and a process for regulating the growth of plants are disclosed. Also disclosed is a method for making such antipode.
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- Synergistic compositions for inhibiting plant growth
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A plant growth-inhibiting composition comprising STR1 wherein the various radicals are as defined.
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- 1-Vinyltriazole compounds and plant growth and fungicidal compositions
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1-Vinyltriazole compounds of the formula STR1 wherein R1 is alkyl, substituted alkyl, cycloalkyl, aryl or substituted aryl; R2 is alkyl; R3 is alkyl, cycloalkyl, cycloalkenyl, substituted cycloalkenyl, alkenyl, aryl or substituted aryl; or R2 and R3, together with the carbon to which they are bonded, represent cycloalkenyl, substituted cycloalkenyl, cycloalkyl or substituted cycloalkyl; X is the group STR2 or, alternatively, X may represent a keto group provided that when X is a keto group, R1 is alkyl, substituted alkyl, cycloalkyl, or substituted cycloalkyl; R4 is hydrogen, alkyl, aralkyl, substituted aralkyl, acyl, carbamoyl or substituted carbamoyl; R5 is hydrogen, alkyl, aralkyl or substituted aralkyl; and acid addition salts and metal salt complexes thereof; are outstandingly effective plant growth regulants and as fungicides.
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