PROCESS FOR PREPARING HALOGENATED METHYL BENZOYL CYANIDES

    公开(公告)号:BG62806B1

    公开(公告)日:2000-08-31

    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. 3 claims

    15.
    发明专利
    未知

    公开(公告)号:BR9811301A

    公开(公告)日:2000-08-29

    申请号:BR9811301

    申请日:1998-07-20

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP98/04485 Sec. 371 Date Jan. 11, 2000 Sec. 102(e) Date Jan. 11, 2000 PCT Filed Jul. 20, 1998 PCT Pub. No. WO99/06339 PCT Pub. Date Feb. 11, 1999Substituted benzyl bromides of the formula I where at least one substituent R1-5 is an electron-attracting group such as fluorine, chlorine, bromine, C1-C4-alkoxycarbonyl, cyano or nitro, and the other substituents R1-5 are hydrogen or methyl, are prepared by bromination of substituted toluenes of the formula II with a brominating agent at from 20 to 95 DEG C.

    Oxime ether preparation; oxamine reacted with dialkylcarbonates

    公开(公告)号:NZ296990A

    公开(公告)日:2000-02-28

    申请号:NZ29699095

    申请日:1995-11-21

    Applicant: BASF AG

    Abstract: The application concerns a process for preparing oxime ethers of general formula (I), in which R1 means a C-organic group; R2 means hydrogen, alkoxy, cyano, nitro, SOR4, SO2R4, CO2-alkyl, P(O) (OR4)2 or a C-organic group; and R3, R4 mean optionally substituted C1-C6 alkyl, by converting an oxime of general formula (II), in which the substituents R1, R2 have the above meanings, optionally in the presence of an organic diluting agent with a base into the corresponding salt, and reacting the latter with a dialkylcarbonate of general formula (III), R3 having the above meaning.

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