METHOD FOR PRODUCING BETA-NITROSTYRENE COMPOUND
    23.
    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
    24.
    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。

    Catalytic preparation of nitroalkanes
    26.
    发明授权
    Catalytic preparation of nitroalkanes 失效
    催化制备硝基烷烃

    公开(公告)号:US4431842A

    公开(公告)日:1984-02-14

    申请号:US446076

    申请日:1982-12-01

    Inventor: William V. Hayes

    CPC classification number: C07C201/10

    Abstract: A process of making nitroalkanes which comprises reacting a lower alkanol, e.g. methanol, and nitric acid (HNO.sub.3) in the vapor phase in the presence of a catalyst which is an oxide or a salt of a metal of Group II of the periodic table, e.g. calcium chloride.

    Abstract translation: 制备硝基烷烃的方法,其包括使低级链烷醇如 甲醇和硝酸(HNO 3)在催化剂存在下的气相中,该催化剂是周期表第II族金属的氧化物或盐。 氯化钙。

    Method for synthesizing 3,5-dichloroanisole from 1,3,5-trichlorobenzene
    29.
    发明授权
    Method for synthesizing 3,5-dichloroanisole from 1,3,5-trichlorobenzene 有权
    从1,3,5-三氯苯合成3,5-二氯苯甲醚的方法

    公开(公告)号:US08901361B2

    公开(公告)日:2014-12-02

    申请号:US13522291

    申请日:2011-01-12

    Abstract: A method for synthesizing 3,5-dichloroanisole from 1,3,5-trichloro-benzene is proved. The method may comprises: a) the reaction between 1,3,5-trichloro-benzene and a methanolate of an alkaline or alkaline-earth metal in a first solvent chosen from among dimethylsulfoxide and 1,1,3,3-tétramethylurea, b) the precipitation of the product resulting from step a) in a second solvent which is not included among substances considered carcinogenic, mutagenic and/or toxic for reproduction by Regulation (EC) no 1272/2008 of the European Parliament and of the Council of 16 Dec. 2008, then c) the recovery of the precipitate thus obtained. The method may be applied to synthesize 1,3,5-triamino-2,4,6-trinitrobenzene in which 3,5-dichloroanisole is an intermediate product.

    Abstract translation: 证明了从1,3,5-三氯苯合成3,5-二氯苯甲醚的方法。 该方法可以包括:a)在选自二甲基亚砜和1,1,3,3-三甲基脲的第一溶剂中的1,3,5-三氯苯和碱金属或碱土金属的甲醇盐之间的反应,b )通过欧盟议会和理事会第1272/2008号条例(EC)第1272/2008号规定的步骤a)在第二溶剂中的沉淀,该第二溶剂不包括在被认为是致癌,致突变和/或有毒生殖的物质中 然后c)如此获得的沉淀物的回收。 该方法可用于合成其中3,5-二氯苯甲醚为中间产物的1,3,5-三氨基-2,4,6-三硝基苯。

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