156.
    发明专利
    未知

    公开(公告)号:BR8501113A

    公开(公告)日:1985-11-05

    申请号:BR8501113

    申请日:1985-03-13

    Applicant: BASF AG

    Abstract: 1-Hydroxypyrazole derivatives of the formula (I) (I) where A is n is 0 or 1, R1, R2 and R3 independently of one another are each hydrogen, chlorine, bromine or iodine, R4 is hydrogen, a straight-chain or branched, open-chain alkyl, alkenyl or alkynyl radical, a cyclic alkyl, alkenyl or alkynyl radical or aryl or aralkyl, and the radicals R4 which are capable of substitution may furthermore be monosubstituted or polysubstituted by halogen, haloalkyl, haloalkoxy, alkyl, alkoxy, alkoxycarbonyl, -OH, =O, -COOH or salts of this, -NO2 or -CN, have a nitrification-inhibiting action. Substances where R4 is not hydrogen when n is 0 are novel.

    159.
    发明专利
    未知

    公开(公告)号:BR0207063A

    公开(公告)日:2008-07-22

    申请号:BR0207063

    申请日:2002-02-06

    Applicant: BASF AG

    Abstract: An organic compound having at least one C-C double bond is epoxidized by means of hydrogen peroxide in the presence of at least one catalytically active compound and at least one solvent, wherein a product mixture comprising alpha-hydroperoxyalcohols is reduced using at least one reducing agent. The process advantageously comprises at least the following steps: (i) reacting an organic compound having at least one C-C double bond with hydrogen peroxide in the presence of at least one catalytically active compound and at least one solvent to give a product mixture P1 comprising alpha-hydroperoxyalcohols; (ii) separating an epoxide formed in the reaction in step (i) and the unreacted organic compound having at least one C-C double bond from P1 or P1' to give a product mixture P2 or P2', where P2 comprises the alpha-hydroperoxyalcohols formed as by-product in the reaction in step (i) and P2' is largely free of alpha-hydroperoxyalcohols; (iii) treating P1 and/or P2 with at least one reducing agent so that the alpha-hydroperoxyalcohols are converted into corresponding glycols to give a product mixture P1' or P3.

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