首页> 外文期刊>Chemistry: A European journal >A Comparison of Phosphaferrocene and Phospharuthenocene Ligands in Rh~+-Catalysed Enamide Hydrogenation Reactions:Superior Performance of the Phospharuthenocene
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A Comparison of Phosphaferrocene and Phospharuthenocene Ligands in Rh~+-Catalysed Enamide Hydrogenation Reactions:Superior Performance of the Phospharuthenocene

机译:Rh〜+催化的酰胺酰胺加氢反应中二茂铁和二茂铁配体的比较:优异的性能

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摘要

Enantiopure Cp*-substituted 3,4-dimethyl-5-phenylphosphametallo-cene-2-methanols(M = Fe,Ru)have been prepared from the corresponding 2-carboxy-(-)-menthylphospholide anion and elaborated into 2-CH2PPh2 phosphametallocenes(13:M = Fe;14:M = Ru)and 2-CH2PtBuR substituted phospharuthenocenes(R = tBu,Me).The crystal structures of complexes [Rh(l,5-cod)(eta~2-L)]~+BF_4~-(L = 13,14) reveal significantly different aryl group configurations.Comparative studies of the hydrogenation of para-substituted N-acetylcinnamate esters with these pre-catalysts show a superior performance for the phospharuthenocene derivative in terms of both rate and enan-tioselectivity.
机译:由相应的2-羧基-(-)-薄荷基磷化氢阴离子制备对映体纯的Cp *-取代的3,4-二甲基-5-苯基磷金属茂-2-甲醇(M = Fe,Ru),并精制为2-CH2PPh2磷茂金属(13:M = Fe; 14:M = Ru)和2-CH2PtBuR取代的磷烯醚(R = tBu,Me)。[Rh(l,5-cod)(eta〜2-L)]的配合物的晶体结构+ BF_4〜-(L = 13,14)揭示了显着不同的芳基构型。对取代N-乙酰肉桂酸酯与这些前催化剂的氢化研究比较表明,磷茂烯衍生物在速率和对映选择性。

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