PROCEDE DE PREPARATION DE DERIVES DE SULFONAMIDO-BENZOFURANE
    48.
    发明公开
    PROCEDE DE PREPARATION DE DERIVES DE SULFONAMIDO-BENZOFURANE 审中-公开
    程序磺胺苯并呋喃衍生物的制备

    公开(公告)号:EP2552899A1

    公开(公告)日:2013-02-06

    申请号:EP11720315.8

    申请日:2011-03-30

    申请人: SANOFI

    IPC分类号: C07D307/79 C07B45/04

    CPC分类号: C07D307/79

    摘要: The invention relates to a process for preparing 5-sulfonamido-benzofuran derivatives of general formula: formula (I) in which R represents an alkyl or aryl group and R
    1 and R
    2 represent hydrogen or an alkyl or aryl group. According to the invention, the compounds of formula I are prepared by coupling a benzofuran derivative of general formula II, where X represents chlorine, bromine or iodine or a sulfonate group: formula (II) with a sulfonamide derivative of formula R-SO
    2 -NH
    2 , in the presence of a basic agent and of a catalyst system formed from a complex between a palladium compound and a ligand.

    PROCEDE DE PREPARATION DE DERIVES DE 3-CETO-BENZOFURANE
    49.
    发明公开
    PROCEDE DE PREPARATION DE DERIVES DE 3-CETO-BENZOFURANE 审中-公开
    用于生产3-酮 - 苯并呋喃

    公开(公告)号:EP2552898A1

    公开(公告)日:2013-02-06

    申请号:EP11719314.4

    申请日:2011-03-30

    申请人: SANOFI

    IPC分类号: C07D307/79 C07B45/04

    摘要: The invention relates to a method for preparing 3-keto-benzofurane derivatives of the general formula: Formula (I), where R is an alkyl or aryl group, R
    1 is hydrogen or an alkyl or aryl group, and R
    2 is a substituted alkyl or phenyl group. Said preparation method involves coupling a derivative of Formula III, where X is chlorine, bromine, or iodine or a sulfonate grouping: Formula (III) with a sulfonamide derivative of the formula R-SO
    2 -NH
    2 in the presence of a basic agent and a catalytic system formed of a complex between a palladium compound and a ligand.