摘要:
The invention relates to a method for preparing 5-amino-N-phenyl-1,2,4-triazole-3-sulfonamides of general formula (I). The inventive method is characterized in that 5-amino-3-chlorosulfonyl-1,2,4-triazole of formula (II) is reacted, in the presence of a solvent, with substituted anilines of general formula (III), in which X, n and R have the above-mentioned meanings.
摘要:
A method for producing sulfonyl imidazole derivatives of formula (I), wherein R, R1, R2 and X have the meanings cited in the description. Imidazole derivatives of formula (II) are reacted with sulfonyl chlorides of formula (III) in the presence of an acid binder, an organic diluent which is only slightly mixable with water, water and a phase transfer catalyst.
摘要:
The invention relates to a method for producing 2-dihaloacyl-3-amino-acrylic acid esters of formula (I). Said method is characterised in that acid halides of formula (II) are reacted with dialkyl amino-acrylic acid esters of formula (III), in which R, R1, R2, X1, X2 and Hal are defined as cited in the description, in a water-immiscible organic solvent in the presence of a base. The invention also relates to the novel 2-dihaloacyl-3-amino-acrylic acid esters of formula (I), to their use for producing 3-dihalomethyl-pyrazoles, to a method for producing 3-dihalomethyl-pyrazoles, in addition to novel 3-dihalomethyl-pyrazoles.
摘要:
The invention relates to a method for producing N-(5-amino-2-cyano-4-fluoro-phenyl)-sulphonamides. In a first step, 2-amino-4,5-difluoro-benzonitrile is reacted with sulphonic acid halogenides in the presence of an acid acceptor and a diluting agent at temperatures between 0 °C and 150 °C. In a second step, the N-(2-cyano-4,5-difluoro-phenyl)-sulphonamide and/or N-(2-cyano-4,5-difluoro-phenyl)-sulphonamides are reacted, either in the pure state or mixed, with ammonia in the presence of a diluting agent at temperatures between 100 °C and 200 °C. The invention also relates to new intermediate products of this method.
摘要:
The invention relates to a method for producing N-(3-amino-4-fluorophenyl)- sulphonamides, N-(3-amino-4-fluorophenyl) carboxylic acid amides and N-(3-amino-4-fluorophenyl) carbamates of general formula (I), wherein A stands for SO2, CO or CO2 and R stands for optionally substituted alkyl or aryl, whereby 1-fluoro-2,4 diamino-benzol of formula (II) with sulphonyl chlorides, carboxylic acid chlorides or chloroformic acid esters of general formula (III), wherein A and R have the meaning cited above, is made to react with an acid acceptor and in the presence of a diluting agent at temperatures ranging between -20 °C and +100 °C.