Process for the preparation of 2,6-disubstituted benzothiophene compounds
    1.
    发明授权
    Process for the preparation of 2,6-disubstituted benzothiophene compounds 失效
    2,6-二取代苯并噻吩化合物的制备方法

    公开(公告)号:US6020531A

    公开(公告)日:2000-02-01

    申请号:US230279

    申请日:1999-01-25

    CPC分类号: C07C323/22 C07D333/54

    摘要: A benzothiophene compound represented by a formula: ##STR1## wherein R.sup.1 represents a lower alkyl group, and R.sup.2 represents a halogen atom; a lower alkyl group; or a cycloalkyl group or cycloalkenyl group which may optionally be substituted with a lower alkyl group, a hydroxy group, an acyloxy group or an oxo group,which is a useful intermediate for synthesizing a 2-sub-stituted-3-(4-substituted benzoyl)-6-hydroxybenzo[b]-thiophene derivative having an antiestrogenic activity can be produced in an industrially advantageous manner by subjecting a compound represented by a formula: ##STR2## to a ring-closing reaction. Further, the novel compound of the formula (II) described above is a useful intermediate in the process of the present invention.

    摘要翻译: PCT No.PCT / JP97 / 02440 Sec。 371日期1999年1月25日 102(e)1999年1月25日PCT PCT 1997年7月15日PCT公布。 第WO98 / 03501号公报 日期:1998年1月29日一种由下式表示的苯并噻吩化合物:其中R1表示低级烷基,R2表示卤素原子; 低级烷基; 或可选地被低级烷基,羟基,酰氧基或氧代基取代的环烷基或环烯基,其是合成2-取代的3-(4-取代的) 苯甲酰基)-6-羟基苯并[b] - 噻吩衍生物可以通过使下式表示的化合物进行闭环反应,以工业上有利的方式制备。 此外,上述式(II)的新型化合物是本发明方法中有用的中间体。