51.
    发明专利
    未知

    公开(公告)号:BR0016244A

    公开(公告)日:2002-08-27

    申请号:BR0016244

    申请日:2000-11-27

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing o-chloromethyl benzoic acid chlorides of formula (I), in which R 1 to R 4 can be the same or different and represent hydrogen C 1 -C 4 alkyl, halogen or trifluoromethyl, by reaction benzo condensed lactones of formula (II), in which R 1 to R 4 have the above-mentioned meaning, with thionyl chloride. The inventive method is characterized in that the reaction is carried out in the presence of catalytic quantities of a Lewis acid and in the presence of catalytic quantities of a phosphine derivative.

    54.
    发明专利
    未知

    公开(公告)号:DK0888280T3

    公开(公告)日:2001-10-08

    申请号:DK97903297

    申请日:1997-02-17

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP97/00728 Sec. 371 Date Aug. 4, 1998 Sec. 102(e) Date Aug. 4, 1998 PCT Filed Feb. 17, 1997 PCT Pub. No. WO97/30020 PCT Pub. Date Aug. 21, 1997A process for preparing methyl 2-(2-methylphenyl)-3-methoxyacrylate (I) by formylation of methyl 2-methylphenylacetate (II) in an inert solvent in the presence of a base, and subsequent methylation of the enolate III formed where M+ is an alkali metal cation.

    55.
    发明专利
    未知

    公开(公告)号:AT204850T

    公开(公告)日:2001-09-15

    申请号:AT97903297

    申请日:1997-02-17

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP97/00728 Sec. 371 Date Aug. 4, 1998 Sec. 102(e) Date Aug. 4, 1998 PCT Filed Feb. 17, 1997 PCT Pub. No. WO97/30020 PCT Pub. Date Aug. 21, 1997A process for preparing methyl 2-(2-methylphenyl)-3-methoxyacrylate (I) by formylation of methyl 2-methylphenylacetate (II) in an inert solvent in the presence of a base, and subsequent methylation of the enolate III formed where M+ is an alkali metal cation.

    СПОСОБ ПОЛУЧЕНИЯ N-ЗАМЕЩЕННЫХ 3-ГИДРОКСИПИРАЗОЛОВ

    公开(公告)号:EA001630B1

    公开(公告)日:2001-06-25

    申请号:EA199900536

    申请日:1997-12-04

    Applicant: BASF AG

    Abstract: Настоящееизобретениеотноситсяк способуполучения N-замещенных 3-гидроксипиразоловформулы Iвкоторой Rозначает C-С-алкил, C-С-алкенил, C-С-алкинил, C-С-циклоалкил, арил, выбранныйизфенилаи нафтила; гетероарил, выбранныйизфурила, тиенила, пирролила, изоксазолила, изотиазолила, пиразолила, оксазолила, имидозолила, пиридила, пиридазинила, пиримидинилаилитриазинила, иR, Rозначаютводород, циано, галогени C-С-алкил, C-С-алкенил, C-С-алкинил, C-С-циклоалкил; арил, выбранныйизфенилаи нафтила; гетероарил, выбранныйизфурилатиенила, пирролила, изоксазолила, изотиазолила, пиразолила, оксазолила, имидазолила, пиридила, пиридазинила, пиримидинилаилитриазинила,причемзаместители R, Rи Rинертныв условияхреакции, посредствомокисленияпиразолидин-3-она.

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