Abstract:
The present invention relates to a process for the preparation of substituted 3-aryl-5-trifluoromethyl-1,2,4-oxadiazoles of formula I, which can be obtained through reaction of amidoxime compounds of formula II with a haloacetic ester in the presence of a solvent and a base.
Abstract:
The present invention relates to a novel process for preparing acetanilides of the formula (I) by reacting a 2-halo-N-halomethylacetanilide of the formula (II) with an azole of the formula (III) H-A (III) wherein the substituents R, R1, R2, R3, R4, A, X and X1 in the formulae (I), (II) and (III) have the meanings as indicated in the description.
Abstract:
The present invention relates to a method for preparing 2-[2-(2-chlorothiazol-5-yl)-2-oxo-ethyl]sulfanyl-6-hydroxy-3-methyl-5-phenyl-pyrimidin-4-one or a tautomer thereof, to 2-[2-(2-chlorothiazol-5-yl)-2-oxo-ethyl]sulfanyl-6-hydroxy-3-methyl-5-phenyl-pyrimidin-4-one or a tautomer thereof and to its use as intermediate in the preparation of 2,3-dihydrotheiazolo [3,2-a]pyrimidinium compounds, and specifically of 3-(2-chlorothiazol-5-yl)-8-methyl-7-oxo-6-phenyl-2,3-dihydrothiazolo [3,2-a]pyrimidin-4-ium-5-olate and enantiomerically enriched forms thereof.
Abstract:
Described herein are methods for the production of 4-cyano benzoic acid or salts thereof from terephthalonitrile using nitrilase as catalyst. Also described herein are compositions including 4-cyano benzoic acid.
Abstract:
The present invention relates to a process for preparing optically active compounds of formula X and intermediates thereof, wherein the variables of compound of formula X are as defined in the claims and the description.
Abstract:
The present invention relates to a method for producing an aqueous suspension concentrate formulation and novel suspension concentrate formulations of the compound of formula I. The method comprises: a) providing an aqueous slurry of coarse particles of the compound of the formula I, where the compound of the formula I is at least partially present in its crystalline form B, which, in an X-ray powder diffractogram at 25° C. and Cu-Kα radiation, shows at least three, preferably at least four, in particular at least 5 or at least 7 or at least 9 or all of the following reflexes, given as 2θ values: 8.0±0.2°, 9.5±0.2°, 10.7±0.2°, 11.0±0.2°, 11.2±0.2°, 11.7±0.2°, 14.2±0.2°, 15.6±0.2°, 16.5±0.2°, 17.7±0.2°, 21.5±0.2°; b) comminuting the coarse particles in the slurry of the compound of formula I, which is at least partially present in its form B, in the presence of the at least one surfactant.
Abstract:
The present invention relates to a process for preparing difluoromethyl-substituted pyrazol-4-ylcarboxylic acids and their esters, 2-(aminomethylidene)-4,4-difluoro-3-oxobutteric esters of the formula (I) in which R1, R2 and R3 independently of one another are C1-C6-alkyl, C1-C6-haloalkyl, C2-C6-alkenyl, C3-C10-cycloalkyl or benzyl or NR2R3 is a 5- to 10-membered heterocyclic radical, to a process for preparing compounds of the formula (I) wherein an appropriate 3-aminoacrylic ester is reacted with difluoroacetyl fluoride and to the use of compounds of the formula (I) in the process for preparing difluoromethyl-substituted pyrazol-4-ylcarboxylic acids and their esters.
Abstract:
The present invention relates to a method for preparing an enantiomerically enriched form of 3-(2-chlorothiazol-5-yl)-8-methyl-7-oxo-6-phenyl-2,3-dihydrothiazolo[3,2-a]pyrimidin-4-ium-5-olate.
Abstract:
The present invention relates to a process for the preparation of substituted aromatic carboxamides of formula I, (formula I) which can be obtained through reaction of an aromatic carboxylic acid halide and an amine, whereas the process is conducted in the absence of an auxiliary base in a carboxylic acid ester as solvent.