METHOD FOR MANUFACTURING ARYL CARBOXAMIDES

    公开(公告)号:ZA201008742B

    公开(公告)日:2012-02-29

    申请号:ZA201008742

    申请日:2010-12-06

    Applicant: BASF SE

    Abstract: A process for preparing arylcarboxamides of the formula (I) where Ar=a mono- to trisubstituted phenyl, pyridyl or pyrazolyl ring, where the substituents are selected from halogen, C1-C4-alkyl and C1-C4-haloalkyl; M=thienyl or phenyl, which may bear a halogen substituent; Q=direct bond, cyclopropylene, fused bicyclo[2.2.1]heptane or bicyclo[2.2.1]heptene ring; R1=hydrogen, halogen, C1-C6-alkyl, C1-C4-alkoxy, C1-C4-haloalkoxy, mono- to trisubstituted phenyl, where the substituents are selected from halogen and trifluoromethylthio, or cyclopropyl; by reacting an acid chloride of the formula (II) with an arylamine (III) in a suitable nonaqueous solvent, wherein, in the absence of an auxiliary base, a) the acid chloride (II) is initially charged, b) a pressure of from 0 to 700 mbar is established, c) the arylamine (III) is metered in an approximately stoichiometric amount and d) the product of value is isolated.

    PROCEDIMIENTO PARA PREPARAR COMPUESTOS DE ISOXAZOLINA SUSTITUIDOS Y SUS PRECURSORES.

    公开(公告)号:MX2011011079A

    公开(公告)日:2011-11-04

    申请号:MX2011011079

    申请日:2010-04-29

    Applicant: BASF SE

    Abstract: La presente invención se refiere a un nuevo método para preparar compuestos de estireno halogenados de la fórmula (VIII) (ver fórmula (VIII)) que son precursores en el procedimiento de síntesis de compuestos de isoxazolina sustituidos de la fórmula (I). (ver fórmula (I)) en la que R1 a R5, R8 y R9 se describen como en la descripción. La presente invención se refiere además a la síntesis de compuestos de la fórmula (1) a partir de acetofenonas. Los estirenos deseados de la fórmula son preparados a partir de la acetofenona sustituida apropiada. A más de esto, se hacen reaccionar bromoanilinas con formoxima. Las oximas obtenidas son sometidas a una cicloadición con los estirenos y dan isoxazolinas. Se pueden entonces preparar compuestos de la fórmula (I) haciendo reaccionar las isoxazolinas con una aminación carbonilativa catalizada por paladio.

    METHOD FOR PRODUCING DIFLUOROMETHYL-SUBSTITUTED PYRAZOLE COMPOUNDS

    公开(公告)号:ZA201000204B

    公开(公告)日:2011-10-26

    申请号:ZA201000204

    申请日:2010-01-12

    Applicant: BASF SE

    Abstract: The present invention relates to a process for preparing 3-difluoromethyl-Substituted pyrazole compounds of the formula (I) in which R1 is H, halogen, nitro, C1-C8-alkyl, C1-C8-haloalkyl, C3-C8-cycloalkyl, phenyl, naphthyl, hetaryl, cyano, —C(═O)—OR1a, —C(═O)—NR1bR1c, —C(═O)—SR1d or —C(═S)—SR1e; R2 is H, C1-C4-alkyl, benzyl or phenyl; R3 is H, halogen, C1-C8-alkoxy, C1-C8-haloalkoxy, C3-C8-cycloalkoxy, C2-C8-alkenyloxy, C1-C8-alkylthio, C1-C8-haloalkylthio, C3-C8-cyclo-alkylthio or C2-C8-alkenylthio; compounds of the formula (II.a) or (II.b), in which R1 and R3 each have one of the definitions given above; R4 is halogen, —OR4a, —SR4a, —O—SO2—R4a or an —NR4bR4c group; R5 and R6 are each C1-C8-alkyl, C1-C8-haloalkyl, C3-C8-cycloalkyl, benzyl or phenyl, or, together with the nitrogen atom to which they are bonded, are a 3- to 8-membered heterocycle; Lewis acid adducts of compounds of the formula (II.b); the use of compounds of the formula (II.a) or (II.b) and of the Lewis acid adducts for preparing compounds of the formula (I) or (VI); and to a process for converting such compounds to the corresponding 3-difluoro-pyrazol-4-ylcarboxylic acids.

Patent Agency Ranking