4,4-dihalohexahydrophthalic anhydrides and 4-fluorotetrahydrophthalic
anhydride, and process for their preparation
    1.
    发明授权
    4,4-dihalohexahydrophthalic anhydrides and 4-fluorotetrahydrophthalic anhydride, and process for their preparation 失效
    4,4-二卤代六氢邻苯二甲酸酐和4-氟四氢邻苯二甲酸酐,及其制备方法

    公开(公告)号:US4709056A

    公开(公告)日:1987-11-24

    申请号:US604271

    申请日:1984-05-02

    CPC分类号: C07C61/40 C07C61/15

    摘要: 4,4-dihalohexahydrophthalic anhydrides of the formula ##STR1## where Y is chlorine or fluorine, are prepared by the reaction of hydrogen fluoride with 4-chlorotetrahydrophthalic anhydride.The 4,4-dihalohexahydrophthalic anhydrides of this invention can be dehydrohalogenated by reaction with basic alumina to prepare a mixture of 4-fluorotetrahydrophthalic anhydride isomers of the formula ##STR2## The 4-fluorotetrahydrophthalic anhydrides can then be dehydrogenated by reaction with a dehydrogenation catalyst to prepare 4-fluorophthalic anhydride.

    摘要翻译: 通过氟化氢与4-氯四氢邻苯二甲酸酐的反应制备式“IMAGE”的其中Y是氯或氟的4,4-二卤代六氢邻苯二甲酸酐。 本发明的4,4-二卤代六氢邻苯二甲酸酐可以通过与碱性氧化铝反应脱卤化氢来制备下式的4-氟四氢邻苯二甲酸酐异构体的混合物。然后可以通过与脱氢催化剂反应将4-氟四氢邻苯二甲酸酐脱氢, 制备4-氟邻苯二甲酸酐。

    Process for the preparation of pentahaloethoxy benzoyl halide compounds
    6.
    发明授权
    Process for the preparation of pentahaloethoxy benzoyl halide compounds 失效
    五卤乙氧基苯甲酰卤化合物的制备方法

    公开(公告)号:US5047584A

    公开(公告)日:1991-09-10

    申请号:US806915

    申请日:1985-12-09

    IPC分类号: C07C51/093 C07C51/58

    CPC分类号: C07C51/093 C07C51/58

    摘要: A process for the preparation of pentahaloethoxy benzoyl halide compounds comprisingA) chlorinating p-cresyl trifluoroacetate to form p-.alpha., .alpha.-dichloro-.beta.-,.beta.-,.beta.-trifluoroethoxy benzotrichloride;B) converting the p-.alpha., .alpha.-dichloro-.beta.-,.beta.-,.beta.-trifluoroethoxy benzotrichloride to p-pentafluoroethoxy benzoyl fluoride.

    摘要翻译: 一种制备五卤代乙氧基苯甲酰卤化合物的方法,包括A)氯化对甲酚三氟乙酸酯以形成对 - α,α-二氯-β-,β-,β-三氟乙氧基苯并三氯化物; B)将对 - α,α-二氯-β-,β-,β-三氟乙氧基苯并三氯化物转化为对五氟乙氧基苯甲酰氟。

    Preparation of trifluoromethyl-benzoyl halides
    8.
    发明授权
    Preparation of trifluoromethyl-benzoyl halides 失效
    三氟甲基 - 苯甲酰卤的制备

    公开(公告)号:US4500471A

    公开(公告)日:1985-02-19

    申请号:US140894

    申请日:1980-04-16

    IPC分类号: C07C51/58 C07C51/62 C07C63/10

    CPC分类号: C07C51/62

    摘要: Trifluoromethylbenzoyl chlorides are prepared by the reaction of trichloromethylbenzoyl chlorides or tribromomethylbenzoyl bromides with about 3 moles or less of hydrogen fluoride in the presence of a halogen transfer catalyst.

    摘要翻译: 通过在卤素转移催化剂存在下,三氯甲基苯甲酰氯或三溴甲基苯甲酰溴与约3摩尔或更少的氟化氢反应来制备三氟甲基苯甲酰氯。

    Process for the preparation of aromatic nitriles
    9.
    发明授权
    Process for the preparation of aromatic nitriles 失效
    芳香腈制备方法

    公开(公告)号:US4211721A

    公开(公告)日:1980-07-08

    申请号:US966433

    申请日:1978-12-04

    申请人: Byron R. Cotter

    发明人: Byron R. Cotter

    IPC分类号: B01J31/24 C07C120/04

    摘要: A method and a useful catalyst composition for the production of aromatic nitriles for the corresponding nuclearly halogenated aromatic compounds which contain from 1 to 4 halogen atoms substituted selected from chlorine, bromine and iodine are described.The method involves the steps of heating the halogenated aromatic compound to a temperature of at least 100.degree. C. for a period of at least 2 hours in the presence of potassium cyanide and a catalyst composition comprised of:(a) a ether component selected from the group consisting of 18-crown-6 ether, polyethers, alkyoxypolyethers and mixtures thereof having a molecular weight between about 200 and about 25,000, and(b) a palladium salt complex comprised of:(1) a palladium salt selected from palladium iodide, chloride, bromide and mixtures thereof, and(2) an organophosphine selected from the group consisting of alkyarylphosphines and triarylphosphines containing from about 8 to about 80 carbon atoms.

    摘要翻译: 描述了用于生产芳族腈的方法和有用的催化剂组合物,所述组合物含有1至4个被选自氯,溴和碘的卤素原子的相应的核卤化芳族化合物。 该方法包括在氰化钾和催化剂组合物存在下将卤代芳族化合物加热至至少100℃至少2小时的步骤,所述催化剂组合物包含:(a)选自以下的醚组分: 分子量为约200至约25,000的18-冠醚-6,聚醚,烷氧基聚醚及其混合物组成的组和(b)钯盐络合物组成的组合物包括:(1)选自碘化钯, 氯化物,溴化物及其混合物,和(2)选自含有约8至约80个碳原子的烷基芳基膦和三芳基膦的有机膦。