Process for preparing halogenated methyl benzoyl cyanides

    公开(公告)号:AU694590B2

    公开(公告)日:1998-07-23

    申请号:AU4116596

    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.

    28.
    发明专利
    未知

    公开(公告)号:BR9509940A

    公开(公告)日:1998-01-27

    申请号:BR9509940

    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.

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