61.
    发明专利
    未知

    公开(公告)号:TR200101404T2

    公开(公告)日:2002-01-21

    申请号:TR200101404

    申请日:1999-11-06

    Applicant: BASF AG

    Abstract: The invention relates to a process for preparing 1-substituted 5- and/or 3-hydroxypyrazoles of the formulae I and IIin which R1 is C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C3-C6-cycloalkyl or C1-C4-alkoxy, where these groups may be substituted by halogen, C1-C4-alkoxy, phenoxy, C1-C6-alkoxycarbonyl, C1-C6-alkylthiocarbonyl or by a cyclic ring system having 3-14 ring atoms, which comprises reactingan alkyl 3-alkoxyacrylate of the formula IIIin which R2, R3 independently of one another are C1-C6-alkyl or C3-C6-cycloalkyl with a hydrazine of the formula IVin which R1 is as defined abovea) at a pH of 6-11 to give 5-hydroxypyrazoles of the formula I orb) at a pH of 11-14 to give 3-hydroxypyrazoles of the formula II.

    Method for producing chlorocarboxylic acid chlorides

    公开(公告)号:AU4648501A

    公开(公告)日:2001-09-12

    申请号:AU4648501

    申请日:2001-02-28

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing chlorocarboxylic acid chlorides of formula (I), wherein R and R , independently from one another, mean a hydrogen atom, an organic radical containing carbon, a halogen, a nitro or cyano group and Y means an alkylene chain having 1 to 10 carbon atoms in the chain which is unsubstituted or is substituted by organic radicals that contain carbon, by halogen, nitro and/or cyano groups, whereby the alkylene chain can be interrupted by an ether-, thioether-, tertiary amino- or keto group, whereby the organic radicals of Y and/or R and/or R can be connected to one another and thereby form a non-aromatic system, whereby said radicals contain carbon, by converting a lactone of formula (II), wherein R , R and Y have the aforementioned meanings, using a hydrogen chloride and phosgene in the presence of a catalyst. Hydrogen chloride is added before and/or while phosgene is added. The hydrogen chloride is only introduced at a temperature of at least 60 DEG C. A pyridine compound is used as the catalyst.

    67.
    发明专利
    未知

    公开(公告)号:DE19943858A1

    公开(公告)日:2001-03-15

    申请号:DE19943858

    申请日:1999-09-13

    Applicant: BASF AG

    Abstract: The invention relates to a method for purifying acid chlorides which have been produced by converting carboxylic acids with carbon oxychloride or thionyl chloride in the presence of a catalyst adduct. The acid chlorides are treated with a hydro halide of carboxylic acid amides of general formula (I), wherein R stands for hydrogen or C1- to C3-alkyl; R and R , independently from one another, mean C1- to C4-alkyl or R and R together mean a C4- or C5-alkylene chain. The thus purified acid chloride is isolated by separation said acid chloride from the carboxylic acid amide hydro halide-phase.

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