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    METHOD FOR PRODUCTION OF EPOXY COMPOUND
    2.
    发明专利
    METHOD FOR PRODUCTION OF EPOXY COMPOUND 失效

    公开(公告)号：JPH04276089A

    公开(公告)日：1992-10-01

    申请号：JP29873391

    申请日：1991-11-14

    Applicant: BASF AG

    Inventor： DEIITAA HERUMERINGU

    IPC: C07D301/03 ,  C07D303/22 ,  C25B3/02

    Abstract: Process for producing epoxy compounds of the general formula I in which the substituents R , R , R , R , R are, independently of one another, hydrogen, C1- to C20-alkyl, C3- to C12-cycloalkyl, C4- to C20-cycloalkylalkyl, C1- to C20-hydroxyalkyl, a heterocycle, aryl optionally substituted by C1- to C8-alkyl, C1- to C8-alkoxy, halogen, C1- to C4-haloalkyl, C1- to C4-haloalkoxy, phenyl, phenoxy, halophenyl, halophenoxy, carboxy, C2- to C8-alkoxycarbonyl or cyano, or C7- to C20-arylalkyl, or R and R or R and R or R and R or R and R or R and R are together a (CH2)n group, where n is 1 to 10, optionally mono- or disubstituted by C1- to C8-alkyl, C1- to C8-alkoxy and/or halogen, and R is hydrogen, C1- to C8-alkyl or benzyl, by oxidising allyl alcohols of the general formula II in which R , R , R , R and R have the abovementioned meaning in the presence of an alkanol of the general formula III R -OH (III), where R has the abovementioned meaning, at temperatures of (-20) to 150 DEG C a) electrochemically in the presence of an auxiliary electrolyte or b) with halogens at a pH of 7.5 to 14.

    PREPARATION OF BENZALDEHYDE DIALKYLACETAL
    3.
    发明专利
    PREPARATION OF BENZALDEHYDE DIALKYLACETAL 失效

    公开(公告)号：JPH0776545A

    公开(公告)日：1995-03-20

    申请号：JP19054694

    申请日：1994-08-12

    Applicant: BASF AG

    Inventor： DEIITAA HERUMERINGU ,  HAINTSU HANNEBAUMU ,  HARUTOBUIHI FUOSU ,  ANDOREASU BUAIPAA IDERUMAN

    IPC: C07C41/50 ,  C07C43/307 ,  C25B3/02

    Abstract: This invention is for the preparation of benzaldehyde dialkyl acetals of the general formula I in which R is C1-C6-alkyl and R is C1-C6-alkyl, C1-C6 -alkoxy, halogen, cyano or carboxyalkyl having from 1 to 6 carbon atoms in the alkyl group, and n is an integer from 1 to 3 and the radicals R , in the case of n > 1, can be identical or different, by electrochemical oxidation of substituted toluene compounds of the general formula II by oxidizing a substituted toluene compound II in the presence of an alkanol R -OH and an auxiliary electrolyte (supporting electrolyte) in an electrolytic cell, depressurising the reaction solution thus obtained, outside the electrolytic cell, to a pressure which is lower than the pressure in the electrolytic cell by from 10 mbar to 10 bar, and A) in the case of discontinuous operation, separating the gas liberated during expansion from the reaction solution, recycling the reaction solution into the electrolytic cell at least once, electrolysing, depressurising and separating from the liberated gas, and finally working up to give the product, or B) in the case of continuous operation, working up part of the reaction solution to give the product, admixing the remaining part of the reaction solution with such an amount of the originally employed reaction solution as corresponds to the part drawn off, recycling into the electrolytic cell, electrolysing and depressurising.

    PREPARATION OF DIHYDROXYDIONE
    7.
    发明专利
    PREPARATION OF DIHYDROXYDIONE 失效

    公开(公告)号：JPH02179890A

    公开(公告)日：1990-07-12

    申请号：JP28507889

    申请日：1989-11-02

    Applicant: BASF AG

    Inventor： DEIITAA HERUMERINGU ,  RAINAA BETSUKAA ,  BUARUTAA DOBURAA

    IPC: C07C49/17 ,  C25B3/10

    Abstract: Method for the preparation of dihydroxydiones of the general formula R-CO-CH(OH)-CH(OH)-CO-R I in which R stands for an alkyl radical, in which an aldehyde of the general formula … … in which R has the abovementioned meaning, is electrolysed in a water- containing electrolyte which has a pH of less than 7.

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