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One-Pot Synthesis and Immobilisation of Sulfonate-Tethered N-HeterocyclicCarbene Complexes on Polycationic Dendrimers

机译:在聚阳离子树枝状聚合物上一锅合成磺酸盐固定的N-杂环碳烯配合物

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摘要

Since their first isolation by Arduengo and co-workers in1991, N-heterocyclic carbenes (NHCs) have been widelyused as versatile ligands in organometallic chemistry and ho-mogeneous catalysis.111 Due to their strong o-donor charac-teristics, these compounds are known to form robust transi-tion-metal complexes. As a consequence, the use of NHCsas ligands allows the synthesis of highly functionalised or-ganometallic complexes that combine catalytic properties ofthe metal center with a variety of other functional groupproperties.121 The stability of NHC carbene complexes hasattracted our interest from the viewpoint of catalyst immo-bilisation, where loss of functional metal sites from the con-struct by metal leaching should be minimal.
机译:自从Arduengo及其同事于1991年首次分离以来,N-杂环卡宾(NHC)在有机金属化学和均相催化中已被广泛用作通用配体。111由于它们具有强大的o-给体特征,因此众所周知形成坚固的过渡金属配合物。因此,使用NHCsas配体可以合成将金属中心的催化特性与多种其他官能团特性相结合的高官能化或纳米金属配合物。121从催化剂的固定化角度出发,NHC卡宾配合物的稳定性吸引了我们的兴趣。 -沸腾作用,在这种情况下,因金属浸出而使结构中的功能金属位点损失最小。

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