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    Preparation of alkyldiarylphosphines and related compounds
    3.
    发明公开
    Preparation of alkyldiarylphosphines and related compounds 失效
    Herstellung von Alkylphosphinen und Verwandten Verbindungen。

    公开(公告)号：EP0196742A1

    公开(公告)日：1986-10-08

    申请号：EP86300592.2

    申请日：1986-01-29

    Applicant: STAUFFER CHEMICAL COMPANY

    Inventor： Bay, William Elliott ,  Reineke, Karl Edward ,  Weil, Edward David

    IPC: C07F9/50

    CPC classification number: C07F9/5077

    Abstract: A process is disclosed for preparing alkyldiarylphosphines and related compounds. In such process a compound having the structural formula:
    wherein :

    Z is an atom from group VA of the periodic table;
    Y is any radical that is essentially incapable of reacting with an alkali metal;
    X is any radical that is essentially incapable of reacting with an alkali metal;
    W is a substituted or unsubstituted aryl, alkyl, arylalkyl, or alkylaryl radical or hydrogen; and
    is prepared by reacting a first halide with a molten alkali metal or amalgam thereof in the presence of an inert solvent to form a first reacted mixture which is reacted with a second halide wherein an amount of the alkali metal or amalgam thereof is used in an excess of less than 100% and the yield of the product is greater than 70%. Typically, diphenylphosphinous chloride is reacted in solution with an excess of an alkali metal; and the reaction product reacted with chorohex- ane thereby forming hexyldiphenylphosphine. The improved process produces greater yields, by use of critical amounts of alkali metal; use of a single reactor rather than two reactors; preinitiation of the first stage reaction reduction of temperatures to increase reaction rate under certain conditions; and preferred reactants and physical form thereof. Novel products include behenyldiphenylphosphine.

    Abstract translation: 公开了制备烷基二芳基膦和相关化合物的方法。 在这种方法中，具有以下结构式的化合物：其中：Z是周期表第VA族的原子; Y是基本上不能与碱金属反应的任何基团; X是任何 基本上不能与碱金属反应的基团; W是取代或未取代的芳基，烷基，芳基烷基或烷基芳基或氢; 和... U是氢或... ...或卤素; ...通过使第一卤化物与熔融碱金属或汞齐在惰性溶剂的存在下反应以形成与第二卤化物反应的第一反应混合物 其中使用的碱金属或汞的量超过100％，产物的收率大于70％。 通常，二苯基次氯化物在溶液中与过量的碱金属反应; 反应产物与己烷反应，从而形成己基二苯基膦。 改进的方法通过使用临界量的碱金属产生更高的产率; 使用单个反应器而不是两个反应器; 在某些条件下第一阶段反应降低温度以提高反应速率; 和优选的反应物及其物理形式。 新产品包括二苯基二苯基膦。

    Process for the production of arylsulfonyl halides
    4.
    发明公开
    Process for the production of arylsulfonyl halides 失效
    Verfahren zur Herstellung von Arylsulfonylhalogeniden。

    公开(公告)号：EP0243584A1

    公开(公告)日：1987-11-04

    申请号：EP87101129.2

    申请日：1987-01-28

    Applicant: STAUFFER CHEMICAL COMPANY

    Inventor： Bolzan, Louis Francis ,  Weil, Edward David

    IPC: C07C303/02

    CPC classification number: C07C309/00

    Abstract: There is disclosed a process for the production of arylsulfonyl halides, e.g., benzenesulfonyl chloride. The disclosed process adds a phosphorus-containing additive, e.g., phosphorous acid, before the reaction of an arylsulfonic acid with a sulfur halide and a halogen. The phosphorus-containing additive reduces the thermal instability of the residue remaining after distillation of the arylsulfonyl halide.

    Abstract translation: 公开了制备芳基磺酰卤，例如苯磺酰氯的方法。 所公开的方法在芳基磺酸与卤化硫和卤素反应之前添加含磷添加剂，例如亚磷酸。 含磷添加剂降低蒸馏芳基磺酰卤后剩余的残余物的热不稳定性。

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