45.
    发明专利
    未知

    公开(公告)号:NO962760D0

    公开(公告)日:1996-06-28

    申请号:NO962760

    申请日:1996-06-28

    Applicant: HOECHST AG

    Abstract: Prodn. of carbon-bridged biscyclopentadiene cpd. comprises reacting one or two cyclopentadiene cpds. (LH), at least one being a substd. cyclopentadiene, with a carbonyl cpd. in the presence of a base and a phase transfer catalyst. Also claimed is the prodn. of a phase transfer catalyst. Also claimed is the prodn. of a carbon-bridged biscyclopentadienyl-metallocene.

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