4.
    发明专利
    未知

    公开(公告)号:DE3687093D1

    公开(公告)日:1992-12-17

    申请号:DE3687093

    申请日:1986-07-04

    Applicant: BASF AG

    Abstract: Prodn. of 1-pyrazolines of formula (I) is effected by (a) stirring a 10-30% aq. soln. of a 1,3-diaminopropane of formula (II) while simultaneously adding a 5-22 wt.% aq. hypochlorite soln. and a 20-50 wt.% aq. soln. of a hydro-peroxide of formula (III) in a hypochlorite: (III) molar ratio of 1:0.5-1.5, the temp. not being allowed to exceed 60 deg. C; (b) rapidly extracting (I) with a hydrophobic organic solvent at room temp.; and (c) distilling the extract in vacuo at a temp. below 100 deg.C: R1-R6 = H or 1-3C alkyl, or 2 such gps. on the same or adjacent C atoms linked to form 3-5C alkylene; R = H, 1-5C alkyl or 2-5C aliphatic acyl. Pref. a 15-19% hypochlorite soln. and a 40-50% H2O2 soln. are added at a rate such that the ClO- and H2O2 concn. never exceeds 5%.

    Verfahren zur Herstellung von Triphenylphosphin
    5.
    发明公开
    Verfahren zur Herstellung von Triphenylphosphin 失效
    制备三苯基膦的方法

    公开(公告)号:EP0761676A3

    公开(公告)日:1998-07-15

    申请号:EP96113453

    申请日:1996-08-22

    Applicant: BASF AG

    CPC classification number: C07F9/509

    Abstract: Verfahren zur Herstellung von Triphenylphosphin durch Reduktion von Triphenylphosphindichlorid an unedlen Metallen bei Temperaturen von 50 bis 150°C und Drücken von 0,2 bis 10 bar, indem das Triphenylphosphindichlorid zu 50 bis 100 Gew.-% kovalent und zu 50 bis 0 Gew.-% ionisch vorliegt.

    Abstract translation: 一种用于通过减少对贱金属二氯化三苯基膦在50至150℃和0.2至10巴的压力由dichlorotriphenylphosphorus到50〜100重量%共价和50〜0重量制备三苯基膦处理 %离子。

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