PROCESS FOR PREPARING OXIME ETHERS BY REACTING OXAMINE WITH DIALKYLCARBONATES

    公开(公告)号:GR3030493T3

    公开(公告)日:1999-10-29

    申请号:GR990401568

    申请日:1999-06-10

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/04580 Sec. 371 Date May 20, 1997 Sec. 102(e) Date May 20, 1997 PCT Filed Nov. 21, 1995 PCT Pub. No. WO96/16932 PCT Pub. Date Jun. 6, 1996A process for preparing oxime ethers of the general formula I I where R1 is a C-organic radical, R2 is hydrogen, alkoxy, cyano, nitro, SOR4, SO2R4, CO2-alkyl, P(O)(OR4)2 or a C-organic radical, and R3 and R4 are unsubstituted or substituted C1-C6-alkyl, entails converting an oxime of the general formula II II where the substituents R1 and R2 have the abovementioned meanings, in the presence or absence of an organic diluent, with a base into the corresponding salt, and reacting the latter with a dialkyl carbonate of the general formula III III where R3 has the abovementioned meanings.

    PROCESS FOR PREPARING HALOGENATED METHYL BENZOYL CYANIDES

    公开(公告)号:HUT77098A

    公开(公告)日:1998-03-02

    申请号:HU9701994

    申请日:1995-11-14

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/04463 Sec. 371 Date May 6, 1997 Sec. 102(e) Date May 6, 1997 PCT Filed Nov. 14, 1995 PCT Pub. No. WO96/16023 PCT Pub. Date May 30, 1996Halomethylbenzoyl cyanides I PH-CO-CN (I) where Ph is phenyl which is substituted by chloromethyl or bromomethyl and may cary 1-4 other rradicals, are prepared from halomethylbenzoyl chlorides II PH-CO-Cl (II), by reacting II with a cyanide-donating compound in the presence of a Lewis acid, if required in an inert organic solvent or diluent, and then isolating the product. The halomethylbenzoyl cyanides I are important intermediates for synthesizing crop protection agents.

    PROCESS FOR PREPARING OXIME ETHERS BY REACTING OXAMINE WITH DIALKYLCARBONATES

    公开(公告)号:HUT77097A

    公开(公告)日:1998-03-02

    申请号:HU9701988

    申请日:1995-11-21

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/04580 Sec. 371 Date May 20, 1997 Sec. 102(e) Date May 20, 1997 PCT Filed Nov. 21, 1995 PCT Pub. No. WO96/16932 PCT Pub. Date Jun. 6, 1996A process for preparing oxime ethers of the general formula I I where R1 is a C-organic radical, R2 is hydrogen, alkoxy, cyano, nitro, SOR4, SO2R4, CO2-alkyl, P(O)(OR4)2 or a C-organic radical, and R3 and R4 are unsubstituted or substituted C1-C6-alkyl, entails converting an oxime of the general formula II II where the substituents R1 and R2 have the abovementioned meanings, in the presence or absence of an organic diluent, with a base into the corresponding salt, and reacting the latter with a dialkyl carbonate of the general formula III III where R3 has the abovementioned meanings.

    PROCESS FOR PREPARING HALOGENATED METHYL BENZOYL CYANIDES

    公开(公告)号:BG101483A

    公开(公告)日:1997-10-31

    申请号:BG10148397

    申请日:1997-05-14

    Applicant: BASF AG

    Abstract: The halogenated methyl benzoyl cyanides are of formula (I) Ph-CO-CN , in which Ph stands for a phenyl rest substituted by chloromethyl or bromethyl that optionally carry 1-4 other rests, from halogenated methyl benzoyl chlorides having the formula (II) Ph-CO-CL. The compound having the formula (II) is reacted with a cyanide-releasing compound in the presence of a Lewis acid, optionally in an inert organic solvent, and the product obtained by this process is then isolated. The halogenated methyl benzoyl cyanides having the formula (I) are important intermediate products for the synthesys of plant protective agents.

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