SYNTHESIS OF UV ABSORBING COMPOUNDS
    2.
    发明公开
    SYNTHESIS OF UV ABSORBING COMPOUNDS 审中-公开
    UV吸收化合物的合成

    公开(公告)号:EP2925724A1

    公开(公告)日:2015-10-07

    申请号:EP13858186.3

    申请日:2013-11-27

    发明人: RYAN, John YORK, Mark

    IPC分类号: C07D211/70 C07D211/94

    摘要: A method of synthesis is provided to obtain a range of UV absorbing compounds. The method broadly involves(a) the reduction of a glutarimide or its reaction with a carbon nucleophile; (b) when step (a) is a reduction, exposing the product of step (a) to an acidic environment to form a cyclic amide; (c) reducing the product of step (a) or step (b) to form a corresponding enamine; and subjecting the enamine product of step (c) to an acylation.