METHOD FOR PRODUCING BETA-NITROSTYRENE COMPOUND
    168.
    发明申请
    METHOD FOR PRODUCING BETA-NITROSTYRENE COMPOUND 失效
    生产硝基硝基化合物的方法

    公开(公告)号:US20100130795A1

    公开(公告)日:2010-05-27

    申请号:US12452877

    申请日:2008-07-28

    CPC classification number: C07C201/12 C07C205/09

    Abstract: A method for producing a β-nitrostyrene compound is provided in which a benzaldehyde derivative represented by the following formula (I): and nitromethane are condensed in an acetic acid solvent in the presence of a primary amine. This method allows production of a β-nitrostyrene compound at a high yield in the industrially-safe reaction temperature range.

    Abstract translation: 提供一种生产一种硝基苯乙烯化合物的方法,其中由下式(I)表示的苯甲醛衍生物和硝基甲烷在乙酸溶剂中在伯胺存在下缩合。 该方法允许在工业安全的反应温度范围内以高产率生产一种 - 硝基苯乙烯化合物。

    4-hydroxy-2'-nitrobutyrophenone and
tetrahydro-2-(o-nitrophenyl)-2-furanol useful as intermediates in the
preparation of a crop-selective herbicide
    169.
    发明授权
    4-hydroxy-2'-nitrobutyrophenone and tetrahydro-2-(o-nitrophenyl)-2-furanol useful as intermediates in the preparation of a crop-selective herbicide 失效
    4-羟基-2'-硝基苯丙酮和四氢-2-(邻硝基苯基)-2-呋喃醇可用作制备作物选择性除草剂的中间体

    公开(公告)号:US5281726A

    公开(公告)日:1994-01-25

    申请号:US997844

    申请日:1992-12-29

    Inventor: David A. Cortes

    CPC classification number: C07D307/20 C07C205/45

    Abstract: There are provided 4-Hydroxy-2'-nitrobutyrophenone and tetrahydro-2-(o-nitrophenyl)-2-furanol and mixtures thereof, important intermediates in the preparation of the crop-selective herbicidal agent 1-{[o-(cyclopropylcarbonyl)phenyl]sulfamoyl}-3-(4,6-dimethoxy-2-pyrimidinyl)urea. Also provided is a method for the preparation of 4-halo-2'-nitrobutyrophenone, useful as an intermediate in the preparation of 1-{[o-(cyclopropylcarbonyl)phenyl]sulfamoyl}-3-(4,6-dimethoxy-2-pyrimidinyl)urea.

    Abstract translation: 提供4-羟基-2'-硝基苯丙酮和四氢-2-(邻硝基苯基)-2-呋喃醇及其混合物,其是制备作物选择性除草剂1 - ((邻 - (环丙基羰基) 苯基)氨磺酰)-3-(4,6-二甲氧基-2-嘧啶基)脲。 还提供了制备4-卤代-2'-硝基苯丙酮的方法,其可用作制备1 - ((邻 - (环丙基羰基)苯基)氨磺酰基)-3-(4,6-二甲氧基-2 - 嘧啶基)脲。

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