Abstract:
The present invention relates to a novel process for preparing 3-fluoroalkyl-5-pyrazolecarboxylates from ketimines and oxalic acid derivatives which can be further transformed into 3-fluoroalkyl-5-pyrazolecarboxylic acids.
Abstract:
A new process for the preparation of 5-fluoro-1H-pyrazoles of the general formula (I) as described herein, resulting from the reaction of an olefin with hydrazine in the presence of water and a base.
Abstract:
A method for preparing N-(1,3,4-oxadiazol-2-yl)arylcarboxamides of formula (I) is described. The substituents therein are radicals such as hydrogen, alkyl, haloalkyl or aryl.
Abstract:
The present invention relates to a novel process for preparing 3,5-bis(haloalkyl)pyrazole derivatives of the formula Ia) and (Ib), via acylation of ketimines.
Abstract:
The present invention relates to a novel method for preparing 1-alkyl-3-difluoromethyl-5-fluor-1H-pyrazole-4-carbaldehydes or esters thereof of formula (I) by means of reductive dehalogenation, starting from 1-alkyl-3-chlorodifluoromethyl-5-fluoro-1H-pyrazole-4-carbaldehydes or esters thereof Formula (I)
Abstract:
A new process for the preparation of 5-fluoro-1H-pyrazoles of the general formula (I) as described herein comprising reacting an olefin with an hydrazine.
Abstract:
A new one-step process for the preparation of pyrazole carboxamide derivatives of the general formula (I) by reaction of 3-(difluoromethyl)-5-fluoro-1-methyl-1H-pyrazole-4-carbaldehyde with an amine or its salt.