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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Bis(allyl)-ruthenium(IV) complexes with phosphinous acid ligands as catalysts for nitrile hydration reactions
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Bis(allyl)-ruthenium(IV) complexes with phosphinous acid ligands as catalysts for nitrile hydration reactions

机译:次膦酸配体的双(烯丙基)-钌(IV)配合物作为腈水合反应的催化剂

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摘要

Several mononuclear ruthenium(IV) complexes with phosphinous acid ligands [RuCl2(eta(3):eta(3)-C10H16)(PR2OH)] have been synthesized (78-86% yield) by treatment of the dimeric precursor [{RuCl(mu-Cl)(eta(3):eta(3)-C10H16)} 2] (C10H16 = 2,7-dimethylocta-2,6-diene-1,8-diyl) with 2 equivalents of different aromatic, heteroaromatic and aliphatic secondary phosphine oxides R2P(= O)H. The compounds [RuCl2(eta(3):eta(3)-C10H16)(PR2OH)] could also be prepared, in similar yields, by hydrolysis of the P-Cl bond in the corresponding chlorophosphine-Ru(IV) derivatives [RuCl2(eta(3):eta(3)-C10H16)(PR2Cl)]. In addition to NMR and IR data, the X-ray crystal structures of representative examples are discussed. Moreover, the catalytic behaviour of complexes [RuCl2(eta(3):eta(3)-C10H16)(PR2OH)] has been investigated for the selective hydration of organonitriles in water. The best results were achieved with the complex [RuCl2(eta(3):eta(3)-C-10 H-16)(PMe2OH)], which proved to be active under mild conditions (60 degrees C), with low metal loadings (1 mol%), and showing good functional group tolerance.
机译:通过处理二聚体前体[{RuCl([rCl2(e)(n(3):n(3)-c10h16)(pr2oh) mu-Cl)(eta(3):eta(3)-C10H16)} 2](C10H16 = 2,7-二甲基辛基-2,6-二烯-1,8-二基),具有2个当量的不同芳族,杂芳族和脂族仲氧化膦R2P(= O)H。化合物[RuCl2(eta(3):eta(3)-C10H16)(PR2OH)]也可以通过相应的氯膦-Ru(IV)衍生物[RuCl2 (eta(3):eta(3)-C10H16)(PR2Cl)]。除NMR和IR数据外,还讨论了代表性实例的X射线晶体结构。此外,已经研究了配合物[RuCl2(eta(3):eta(3)-C10H16)(PR2OH)]的催化行为,用于有机腈在水中的选择性水合。配合物[RuCl2(eta(3):eta(3)-C-10 H-16)(PMe2OH)]达到了最佳效果,该配合物在温和的条件下(60摄氏度)具有低金属含量,具有活性负载量(1摩尔%),并显示出良好的官能团耐受性。

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