Abstract:
PROBLEM TO BE SOLVED: To provide a method for easily producing an E-oxime ether isomer of a phenylglyoxylic ester. SOLUTION: The method for producing the E-oxime ether represented by formula (I) (wherein, X and Y are each a halogen, a 1-4C alkyl, a 1-4C alkoxy, trifluoromethyl, and a 1-1-5C alkyl-(2-5C alkenyl)-hydroxyimino-1-5C alkyl-(2-5C alkenyl)-hydroxyimino; (m) is an integer of 0-54; (n) is an integer of 0-53) is characterized by converting the E-oxime ether represented by formula (IIa) (wherein, substituents are the same as defined above) to a salt by using a base in the presence of an organic diluent and reacting the product with a methylation agent of CH 3 (wherein, X is Cl, Br, or the like). COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a new halomethylbenzoyl cyanide industrially useful as an important intermediate product for the synthesis of a plant protection agent. SOLUTION: The halomethylbenzoyl cyanide expressed by formula I' is produced by the reaction of a halomethylbenzoyl chloride with an alkali metal cyanide or a transition metal cyanide. In the formula, X is a halogen atom, a 1-4C alkyl, a 1-4C alkoxy, trifluoromethyl, -C(1-5C alkyl)=N-O-(1-5C alkyl) or -C(1-5C alkyl)=N-O-(2-5C alkenyl); m is 0-4; and Y is chloromethyl or bromomethyl. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
A method for the production of a particle-containing preparation of tetrahydro-3,5-dimethyl-1,3,5-thiadiazin-2-thione, by combination of a first aqueous solution containing methylammonium-N-methyldithiocarbamate with a second solution containing formaldehyde and separation and drying of the solid formed is disclosed. The invention is characterised in that the first and second solutions are combined such that over the duration of the reaction the ratio of the concentration of dithiocarbamate functions and formaldehyde in the reaction mixture remains essentially constant over time.
Abstract:
The invention concerns a method of preparing .alpha.-methoxyiminocarboxylic acid methylamides of formula (I)(X = nitro, trifluoromet hyl, halogen, alkyl or alkoxy; n = 0, 1, 2, 3 or 4; Y = an organic carbon group) by the Pinner reaction of cyanoketone of formula (II) wi th an alcohol, followed by reaction of the ester of formula (IV) formed in the Pin ner reaction with hydroxylamine to give an oxime of form ula (V), methylation of (V) to give an oxime ether of formula (VI) and subsequen t reaction of (VI) with methylamine. The invention also concerns the intermediates used in the method.
Abstract:
The invention relates to a process for preparing 2-halopyridinecarboxamides of primary aromatic monoamines I which have a substituent other than hydrogen in the ortho-position to the amino group by reaction of 2-halopyridinecarbonyl chloride II with the aromatic monoamine I, which comprises carrying out the reaction in a solvent mixture comprising water and at least one water-immiscible organic solvent in the presence of none or less than 10 mol %, based on the 2-halopyridinecarbonyl chloride II, of a base other than I or II.
Abstract:
Described is a process for the preparation of a particulate tetrahydro-3,5-dimethyl-1,3,5-thiadiazine-2-thione product by combining a first aqueous solution comprising methylammonium N-methyldithiocarbamate with a second aqueous solution comprising formaldehyde, followed by separation and drying of the resulting solid, which comprises combining the first and the second aqueous solutions in such a way that the ratio between the concentrations of dithiocarbamate functions and of formaldehyde is essentially constant in the reaction mixture over time during the duration of the reaction.
Abstract:
The invention concerns a method of preparing alpha-methoxyiminocarboxylic acid methylamides of formula X=nitro, trifluoromethyl, halogen, alkyl or alkoxy; n=0,1,2,3 or 4; Y=an organic carbon group) by the Pinner reaction of a cyanoketone of formula with an alcohol, followed by reaction of the ester of formula formed in the Pinner reaction with hydroxylamine to give an oxime of formula methylation of compound of formula V to give an oxime ether of formula and subsequent reaction of compound of formula VI with methylamine. 10 claims