SEPARATION OF DIASTEREOISOMERS
    86.
    发明授权
    SEPARATION OF DIASTEREOISOMERS 有权
    非对映体的分离

    公开(公告)号:EP1458661B1

    公开(公告)日:2007-05-02

    申请号:EP02796762.9

    申请日:2002-12-20

    CPC classification number: C07B57/00

    Abstract: Process for modifying the relative ratios of the components of a liquid starting mixture of specific diastereoisomers, containing at least two asymmetric carbon atoms comprising contacting said liquid mixture with a Lewis acid compound capable of co-ordinating said specific diastereoisomers and subjecting the resulting mixture to conditions such that a reaction product, having a molar ratio between its diastereoisomeric components different from the corresponding molar ratio in the said liquid starting mixture, becomes separated from the said liquid mixture, said process being carried out using an amount of said Lewis acid not enough to co-ordinate the total amount of the diastereoisomeric components of the liquid starting mixture. This method shows an excellent balance of efficiency and easiness of procedure that cannot be reached with the physical methods of diastereoisomers separation known in the art.

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