Separation of isomers, e. g., phenethyl bromide from
1-phenyl-1-bromoethane
    1.
    发明授权
    Separation of isomers, e. g., phenethyl bromide from 1-phenyl-1-bromoethane 失效
    异构体的分离,E.G.,1-苯基-1-甲氧基苯乙烯的苯乙酰胺

    公开(公告)号:US5181992A

    公开(公告)日:1993-01-26

    申请号:US537926

    申请日:1990-06-13

    CPC分类号: C07C17/395 Y10S203/06

    摘要: Mixtures of isomers, e.g., mixtures of phenethyl bromide and 1-phenyl-1-bromoethane, are separated by (a) selectively condensing one such isomer with an aromatic compound bearing at least one aryl (nuclear) hydrogen atom, e.g., xylene, in the presence of a catalytically effective amount of a Friedel-Crafts catalyst, e.g., ferric chloride, and then (b) separating the product of condensation, e.g., phenylxylylethane, from the unreacted isomer.

    摘要翻译: 异构体的混合物,例如苯乙基溴和1-苯基-1-溴乙烷的混合物通过(a)选择性地将一种这样的异构体与带有至少一个芳基(核)氢原子的芳族化合物(例如二甲苯) 存在催化有效量的Friedel-Crafts催化剂,例如氯化铁,然后(b)从未反应的异构体中分离缩合产物,例如苯基二甲基乙烷。

    Synthesis of perfluoroalkyl bromides
    2.
    发明授权
    Synthesis of perfluoroalkyl bromides 失效
    全氟烷基溴化物的合成

    公开(公告)号:US5057633A

    公开(公告)日:1991-10-15

    申请号:US617128

    申请日:1990-11-21

    CPC分类号: C07C17/093

    摘要: The invention relates to the preparation of perfluoroalkyl bromides or bromoperfluoroalkanes C.sub.n F.sub.2n+1 -Br (n=1 to 20).A perfluoroalkanesulphonyl chloride C.sub.n F.sub.2n+1 -SO.sub.2 Cl is reacted with a compound of formula: ##STR1## in which X represents a nitrogen or phosphorus atom and R.sup.1, R.sup.2, R.sup.3 and R.sup.4, which may be identical or different, each represent an optionally substituted hydrocarbon radical, it also being possible for one of these symbols to be a hydrogen atom.

    摘要翻译: 本发明涉及全氟烷基溴或溴全氟烷烃CnF2n + 1-Br(n = 1至20)的制备。 使全氟烷基磺酰氯CnF2n + 1-SO2Cl与下式的化合物反应:其中X表示氮或磷原子,R 1,R 2,R 3和R 4可以相同或不同,表示任选取代的烃 自由基,这些符号之一也可能是氢原子。

    Method for preparing .alpha., .omega.-bromochloroalkanes
    3.
    发明授权
    Method for preparing .alpha., .omega.-bromochloroalkanes 失效
    制备α,ω-溴氯烷烃的方法

    公开(公告)号:US5981815A

    公开(公告)日:1999-11-09

    申请号:US981953

    申请日:1998-05-05

    CPC分类号: C07C17/093

    摘要: The invention relates to a process for the preparation of .alpha.,.omega.-bromochloroalkanes. A cyclic ether is hydrobrominated and then the phase obtained is reacted, without any prior purification or separation, with thionyl chloride.

    摘要翻译: PCT No.PCT / FR96 / 01036 Sec。 371日期:1998年5月5日 102(e)日期1998年5月5日PCT PCT 1996年7月3日PCT公布。 出版物WO97 / 03037 日期1997年1月30日本发明涉及一种制备α,ω-溴氯代烷烃的方法。 将环醚氢溴化,然后将所得相与亚硫酰氯反应,无需任何预先纯化或分离。

    Process for the manufacture of halo esters of carboxylic or dicarboxylic
acids
    6.
    发明授权
    Process for the manufacture of halo esters of carboxylic or dicarboxylic acids 失效
    制备羧酸或二羧酸的卤代酯的方法

    公开(公告)号:US5804687A

    公开(公告)日:1998-09-08

    申请号:US589582

    申请日:1996-01-22

    CPC分类号: C07C67/11

    摘要: A compound (Ia) or (Ib) is prepared by reacting, in a polar aprotic solvent, a compound (III) with a salt of a carboxylic or dicarboxylic acid (IIa) or (IIb). The reaction may be carried out under pressure, but also at normal atmospheric pressure or in the region of normal atmospheric pressure (especially between 0.10 bar and 2 bars). The product (Ia) or (Ib) formed is, in this latter case, recovered continuously as it is formed. ##STR1## R.sup.1, R.sup.2 =optionally substituted saturated or unsaturated acyclic or cyclic hydrocarbon radicals; R.sup.3 =C.sub.1 -C.sub.10 perhaloalkyl; 0

    摘要翻译: 通过在极性非质子溶剂中使化合物(III)与羧酸或二羧酸(IIa)或(IIb)的盐反应来制备化合物(Ia)或(Ib)。 反应可以在压力下进行,也可以在常压或正常大气压(特别是0.10巴和2巴)之间进行。 在后一种情况下形成的产物(Ia)或(Ib)在其形成时连续回收。 (Ia)R 3(CH 2)n X(III)R 1,R 2 =任选取代的饱和或不饱和的无环或环状烃基; R3 = C1-C10全卤代烷基; 0

    Process for the preparation of 3-chloropropionic acid
    7.
    发明授权
    Process for the preparation of 3-chloropropionic acid 失效
    3-氯丙酸的制备方法

    公开(公告)号:US5731469A

    公开(公告)日:1998-03-24

    申请号:US610616

    申请日:1996-03-04

    CPC分类号: C07C51/363

    摘要: A process for the preparation of 3-chloropropionic acid consists especially in simultaneously introducing hydrochloric acid gas and acrylic acid at a molar ratio of 0.7:1 to 1.3:1 into a sediment consisting of 3-chloropropionic acid optionally diluted with water or with an aqueous hydrochloric acid solution.

    摘要翻译: 制备3-氯丙酸的方法特别包括将盐酸气体和丙烯酸以0.7:1至1.3:1的摩尔比同时引入到由3-氯丙酸组成的沉淀物中,所述沉淀物任选地用水稀释或用水 盐酸溶液。

    Synthesis of n-perfluorooctyl bromide
    10.
    发明授权
    Synthesis of n-perfluorooctyl bromide 失效
    正全氟辛基溴的合成

    公开(公告)号:US5545776A

    公开(公告)日:1996-08-13

    申请号:US453931

    申请日:1995-05-30

    IPC分类号: C07C17/10 C07C19/08 C07C19/07

    CPC分类号: C07C17/10

    摘要: The invention relates to the preparation of n-perfluorooctyl bromide. The continuous process according to the invention consists in reacting bromine with 1-hydroheptadecafluoro-n-octane in the gaseous phase, at a temperature between 450.degree. and 520.degree. C. in a Br.sub.2 /C.sub.8 F.sub.17 H mole ratio which can be from 0.2 to 5 and with a contact time between 2 and 240 seconds.The C.sub.8 F.sub.17 Br selectivity is almost complete and information of toxic sub-products like perfluoroisobutene is avoided.

    摘要翻译: 本发明涉及正全氟辛基溴的制备。 根据本发明的连续方法在于使溴与1-羟基十五氟正辛烷在气相中在450℃和520℃之间的温度下以Br2 / C8F17H摩尔比反应,其摩尔比可以为0.2-5,和 接触时间在2到240秒之间。 C8F17Br选择性几乎完成,避免了全氟异丁烯等有毒副产物的信息。