Verfahren zur reduktiven Dehydrohalogenierung von Halogenkohlenwasserstoffen und Halogenethern
    131.
    发明公开

    公开(公告)号:EP0453818A1

    公开(公告)日:1991-10-30

    申请号:EP91105113.4

    申请日:1991-03-30

    IPC分类号: C07C1/26 C07C41/24

    摘要: Geradkettige oder verzweigte, offenkettige oder cyclische Alkane oder Alkene, aromatische oder araliphatische Kohlenwasserstoffe oder aliphatische, aromatische oder aliphatisch-aromatische Ether, die ein oder mehrere Halogenatome tragen, oder deren Gemische können dadurch reduktiv dehydrohalogeniert werden, daß man solche Halogenverbindungen in der Gasphase mit Wasserstoff in Gegenwart von Aktivkohle bei Temperaturen von 200-700°C unter Bildung von Halogenwasserstoff umsetzt.

    摘要翻译: 直链或支链,开链或环状烷烃或烯烃,芳族或芳脂族烃或携带一个或多个卤素原子的脂族,芳族或脂族 - 芳族醚或其混合物可以通过将这种卤素化合物反应脱卤化氢 气相在活性炭存在下,在200-700℃的温度下形成卤化氢。

    Preparation of bidentate ligands
    135.
    发明公开
    Preparation of bidentate ligands 失效
    Verfahren zur Herstellung von Bidentatliganden。

    公开(公告)号:EP0326286A1

    公开(公告)日:1989-08-02

    申请号:EP89300485.3

    申请日:1989-01-19

    摘要: A process is disclosed for preparing bidentate ligands of the formula:
    wherein:
    each Ar is independently selected from aromatic ring compounds having 6 up to 14 carbon atoms, e.g., phenyl, naphthyl, phenanthryl and anthracenyl;
    the x bonds and the y bonds are attached to adjacent carbon atoms on the ring structures;
    each R, when present as a substituent, is independently selected from alkyl, alkoxy, aryloxy, aryl, aralkyl, alkaryl, alkoxyalkyl, aryloxyalkyl, cycloaliphatic, halogen, alkanoyl, aroyl, alkanoyl­oxy, aroyloxy, alkoxycarbonyl, aryloxy carbonyl, carboxyl, cyano, sulfonic acid or formyl radicals;
    n is a whole number in the range of 0-4 were Ar is phenyl; 0-6 where Ar is naphthyl; and 0-8 where Ar is phenanthryl or anthracenyl;
    each R₁ and R₂ is independently selected from alkyl, aryl, aralkyl, alkaryl or cycloaliphatic radicals, or substituted derivatives thereof, wherein; substituted derivatives include ethers, amines, amides, sulfonic acids, esters, hydroxyl groups and alkoxy groups.
    each R₃ and R₄ is independently selected from hydrogen and the R₁ substituents;
    each of the above alkyl groups or moieties is straight or branched chain of 1-20 carbons;
    each aryl group contains 6-10 ring carbons; each cycloaliphatic group contains from 4-8 ring carbons; and
    each Y is independently selected from the elements P, As, Sb and Bi.

    The invention process comprises

    (1) contacting a biaryl compound having the structural formula:
    with a proton abstracting agent under conditions suitable to form a biaryl dianion, which is then
    (2) contacted with a Group V compound of the formula:
    wherein X′ is halogen or a suitable leaving group.

    摘要翻译: 公开了一种制备下式的二齿配位体的方法:其中:每个Ar独立地选自具有6个至多14个碳原子的芳族环化合物,例如苯基,萘基,菲基和蒽基; x键和y键连接在环结构上的相邻碳原子上; 独立地选自烷基,烷氧基,芳氧基,芳基,芳烷基,烷芳基,烷氧基烷基,芳氧基烷基,脂环族,卤素,烷酰基,芳酰基,烷酰氧基,芳氧基,烷氧基羰基,芳氧基羰基,羧基,氰基, 磺酸或甲酰基; n是0-4的整数,Ar是苯基; 0-6其中Ar为萘基; 和0-8,其中Ar是菲基或蒽基; 每个R 1和R 2独立地选自烷基,芳基,芳烷基,烷芳基或脂环族基团或其取代的衍生物,其中; 取代的衍生物包括醚,胺,酰胺,磺酸,酯,羟基和烷氧基。 每个R 3和R 4独立地选自氢和R 1取代基; 上述烷基或部分中的每一个为1-20个碳的直链或支链; 每个芳基含有6-10个环碳; 每个脂环族基团含有4-8个环碳原子; 并且每个Y独立地选自元素P,As,Sb和Bi。 本发明方法包括(1)在适于形成联芳基二价阴离子的条件下,将具有结构式:CHEM的联芳基化合物与质子提取剂接触,然后(2)与下式的V族化合物接触: CHEM>其中X min是卤素或合适的离去基团。 米