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    • 2. 发明授权
    • Hydroformylation using improved catalysts comprising rhodium and
diphosphino ligands
    • 使用包含铑和二磷配体的改进的催化剂进行加氢甲酰化
    • US4139565A
    • 1979-02-13
    • US783121
    • 1977-03-31
    • Jerry D. UnruhLeslie E. Wade
    • Jerry D. UnruhLeslie E. Wade
    • C07C27/22B01J31/00B01J31/20B01J31/24C07B61/00C07C27/00C07C29/16C07C45/00C07C45/50C07C67/00C07C45/08
    • C07C45/50B01J31/20B01J31/2409B01J2231/321B01J2531/845
    • In hydroformylating an ethylenically-unsaturated compound to produce a formyl-substituted derivative using as catalyst rhodium hydrido carbonyl in complex combination with a disphosphino ligand, a high ratio of the normal aldehyde to the iso-aldehyde in the product can be obtained even at very low ratios of ligand to rhodium in the catalyst mixture by using as the ligand a cyclic compound having in the ring two adjacent carbon atoms between the trans position of which the minimum and maximum attainable dihedral angels are, respectively, at least about 90.degree. and not more than about 180.degree., each of these adjacent carbon atoms being substituted with a phosphinomethyl group, the phosphinomethyl groups being in trans relationship to one another. If there are maintained in the reaction zone at least about 1.5 moles of the ligand per atom of rhodium, the desired results are obtained and higher ligand:rhodium ratios are not necessary.
    • 在加氢甲酰化烯键式不饱和化合物以产生甲酰取代的衍生物,使用与分配膦配位体复合组合的催化剂铑氢化羰基,即使在非常低的情况下也可以获得产物中正醛与异醛的高比例 通过使用作为配位体的配位体与铑的比例,其中环状化合物在环的两个相邻碳原子之间的最小和最大可达到的二面角分别为至少约90°而不是更多 大约180°,这些相邻碳原子中的每一个都被膦基甲基取代,膦基甲基彼此反应。 如果在反应区中保持每个原子铑至少约1.5摩尔的配体,则获得所需的结果,并且不需要更高的配体:铑比。