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    • 2. 发明授权
    • Metallocarborane precursor and catalyst
    • 金属环硼烷前体和催化剂
    • US4363747A
    • 1982-12-14
    • US273731
    • 1981-06-15
    • M. Frederick HawthorneMark S. Delaney
    • M. Frederick HawthorneMark S. Delaney
    • B01J31/24C07C45/50C07F15/00B01J31/12
    • B01J31/2404B01J31/2291C07C45/50C07F15/0073B01J2231/321B01J2231/52B01J2231/645B01J2531/821B01J2531/822B01J2531/827B01J31/165
    • An extraordinarily active carborane catalyst for use in hydrogenation, hydroformulation and isomerization reactions. The new catalyst is a modification of known metallocarborane catalysts having a transition metal symmetrically bonded to the pentagonal face of a dicarborane cage with two triphenylphosphine ligands and one hydrogen ligand occupying the remaining transition metal ligand sites. The new alkene-metallocarborane replaces one of the triphenylphosphine ligands with a lower chelating or bridging alkene which is bound to both the transition metal and the carborane cage.The alkene-metallocarborane catalyst may be used as a homogenous catalyst or may be bound to a suitable polymer support for use as a heterogeneous catalyst. The catalyst has been found to be among the most highly reactive catalysts known to date. It is believed the high reactivity of the new catalyst is due to the in situ irreversible hydrogenation of the alkene side chain to produce an open coordination site on the transition metal atom.
    • 用于氢化,加氢成型和异构化反应的非常活泼的碳硼烷催化剂。 新催化剂是已知的具有二碳硼烷笼的五边形面对称地键合过渡金属的金属多异氰酸酯催化剂的改性,其具有两个三苯基膦配体和一个占据剩余的过渡金属配体位点的氢配体。 新的烯烃 - 金属环硼烷用与螯合或桥连烯烃结合的过渡金属和碳硼烷笼两者替代三苯基膦配体之一。 烯烃 - 金属环硼烷催化剂可以用作均匀的催化剂,或者可以与合适的聚合物载体结合,用作非均相催化剂。 已经发现催化剂是迄今为止已知的最高反应性催化剂。 据信,新催化剂的高反应性是由于烯烃侧链的原位不可逆氢化以在过渡金属原子上产生开放的配位点。