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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Metal-catalyzed nucleophilic carbon-heteroatom (C-X) bond formation: the role of M-X intermediates
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Metal-catalyzed nucleophilic carbon-heteroatom (C-X) bond formation: the role of M-X intermediates

机译:金属催化的亲核碳杂原子(C-X)键形成:M-X中间体的作用

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摘要

Many important reactions that lead to carbon-heteroatom bond formation involve attack of anionic heteroatom nucleophiles, such as hydroxides, alkoxides, amides, thiolates and phosphides, at carbon. Related catalytic transformations are mediated by late transition metal complexes of these groups, which remain nucleophilic on metal coordination as a result of repulsive filled-filled interactions between the heteroatom lone pairs and metal d-orbitals and/or of polarization of the bonds M delta+-X delta-. This Perspective presents examples of catalytic nucleophilic C-X bond formation in both biological and synthetic systems and describes how changes in the metal, ancillary ligands and X groups may be used to tune nucleophilic reactivity.
机译:导致碳-杂原子键形成的许多重要反应涉及碳上阴离子杂原子亲核试剂的攻击,例如氢氧化物,醇盐,酰胺,硫醇盐和磷化物。这些基团的后期过渡金属络合物介导了相关的催化转化,这些金属络合物由于杂原子孤对与金属d轨道之间的排斥性填充填充相互作用和/或键M delta +-的极化而在金属配位上保持亲核性。 X delta-。本《观点》提供了在生物和合成系统中催化亲核C-X键形成的实例,并描述了金属,辅助配体和X基团的变化如何用于调节亲核反应性。

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