Catalytic preparation of nitroalkanes
    171.
    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。

    PRODUCTION OF AROMATIC AMINES BY MEANS OF NOVEL HYDROGENATION CATALYSTS
    175.
    发明申请
    PRODUCTION OF AROMATIC AMINES BY MEANS OF NOVEL HYDROGENATION CATALYSTS 审中-公开
    芳香胺被新的加氢生产

    公开(公告)号:WO98046557A1

    公开(公告)日:1998-10-22

    申请号:PCT/EP1998/001985

    申请日:1998-04-06

    CPC classification number: C07C209/36 B01J23/64 B01J23/6482

    Abstract: The invention relates to aromatic amines which are produced by catalytically hydrogenating corresponding aromatic nitrocompounds in a gaseous phase. Hydrogenation is carried out in the presence of catalysts which contain palladium, vanadium and lead as well as rhenium on a ceramic carrier with a BET surface of less than 40 m /g at temperatures ranging from 180 to 500 DEG C in the catalyst bed and with a molar ratio of hydrogen to the nitrogroup(s) ranging from 3:1 to 30:1.

    Abstract translation: 芳族胺对应在气相芳族硝基化合物的催化氢化是通过氢化在催化剂的存在下,其除了钯,钒和铅,加入铼上具有的BET表面积的陶瓷载体制备小于40μm<3> /克含有,在催化剂床和氢气为3硝基或硝基基团的摩尔比温度为180〜500℃下:1至30:1下进行。

    Method for synthesizing 3,5-dichloroanisole from 1,3,5-trichlorobenzene
    177.
    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。

    Method of manufacturing o- and p-nitrobenzaldehyde
    180.
    发明授权
    Method of manufacturing o- and p-nitrobenzaldehyde 失效
    制备邻硝基苯甲醛和对硝基苯甲醛的方法

    公开(公告)号:US4605777A

    公开(公告)日:1986-08-12

    申请号:US744143

    申请日:1985-06-12

    Applicant: Boris Holm

    Inventor: Boris Holm

    CPC classification number: C07C201/10 C07C45/63

    Abstract: This invention relates to a method of manufacturing ortho- and para-nitrobenzaldehyde from o-chloro or o-bromobenzaldehyde and p-chloro or p-bromobenzaldehyde respectively through a nucleophilic aromatic substitution reaction performed in an organic solvent.

    Abstract translation: 本发明涉及分别通过在有机溶剂中进行的亲核芳族取代反应从邻氯或邻溴苯甲醛和对氯或对溴苯甲醛生产邻硝基苯甲醛和对硝基苯甲醛的方法。

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