Publication number: 20040034082
Abstract: Derivatives of pyrazoline (I), wherein R1 is hydrogen, methyl, fluoromethyl, difluoromethyl, trifluoromethyl, carboxylic acid, alkyl carboxylate with 1 to 4 carbon atoms, carboxamide or cyano, R1 is hydrogen or methyl, R3, R4, R7 and R8, independently are hydrogen, chlorine, fluorine, methyl, trifluoromethyl or methoxy, R5 and R6, independently, are hydrogen, chlorine, fluorine, methyl, trifluoromethyl, methoxy, trifluoromethoxy, methylsulphonyl, aminosulphonyl or acetylaminosulphonyl, with the condition that one of the substituents R5 or R6 is a methylsulphonyl, aminosulphonyl or acetylaminosulphonyl group, and with the condition that when R1 is methyl, then R2 is hydrogen or methyl, R3 and R8, independently are hydrogen, chlorine, fluorine, methyl, or trifluoromethyl, R4 is hydrogen, fluorine, methyl, trifluoromethyl or methoxy, R5 is fluorine, trifluoromethyl, trifluoromethoxy, methylsulphonyl, aminosulphonyl or acetylaminosulphonyl, R6 is hydrogen, chlorine, fluorine, methyl, trifluoromethyl, methoxy, tri
Type:
Application
Filed:
December 17, 2002
Publication date:
February 19, 2004
Inventors:
Maria Rosa Cuberes-Altisen, Juana Maria Berrocal-Romero, Maria Montserrat Contijoch-Llobet, Jordi Frigola-Constansa
Publication number: 20040019222
Abstract: Procedure for preparation of compounds with the general formula 1, which include the racemic mixtures (±)-1, and the enantiomerically pure compounds (−)-1 and (+)-1, wherein R1 and R3, like or different, represent an atom of hydrogen, chlorine, fluorine, a methyl, trifluoromethyl or methoxy group; R2 represents an atom of hydrogen, chlorine, fluorine, a methyl, trifluoromethyl, methoxy, trifluoromethoxy, methylsulphonyl or aminosulphonyl group; R4 represents an atom of hydrogen, chlorine, fluorine, a methyl, trifluoromethyl, methoxy, trifluoromethoxy, methylsulphonyl or aminosulphonyl group, with the condition that one of the substituents R2 or R4 is a methylsulphonyl or aminosulphonyl group; which involves obtaining the racemic mixture with the general formula (±)-1 by reacting an (E)-1,1,1-trifluoro-4-aryl-3-buten-2-one with a phenylhydrazine, followed by a treatment with chlorosulphonic acid, or by reacting with chlorosulphonic acid followed by a reaction with sodium hydroxide and,
Type:
Application
Filed:
December 17, 2002
Publication date:
January 29, 2004
Inventors:
Montserrat Alcon- Marrugat, Miguel Angel Pericas-Brondo, Maria Rosa Cuberes-Altisen, Jordi Frigola-Constansa