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首页> 外文期刊>Chemistry: A European journal >Iridium(I) hydroxides: Powerful synthons for bond activation
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Iridium(I) hydroxides: Powerful synthons for bond activation

机译：氢氧化铱（I）：强大的合成子，用于键活化

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摘要

A family of iridium(I) hydroxides of the form [Ir(cod)(NHC)(OH)] (cod=1,5-cyclooctadiene, NHC=N-heterocyclic carbene) is reported. Single-crystal X-ray analyses and computational methods were used to explore the structural characteristics and steric properties of these new complexes. The model complex [Ir(cod)(IiPr)(OH)] (IiPr=1,3-(diisopropyl)imidazol-2-ylidene) undergoes reaction with a wide variety of substrates including boronic acids and silicon compounds. In addition, O-H, N-H and C-H bond activation was achieved with alcohols, carboxylic acids, amines and various sp-, sp~2- and sp ~3-hybridised carbon centres, giving access to a wide range of new Ir~I complexes. These studies have allowed us to explore the exciting reactivity of this motif, revealing a versatile and useful synthon capable of activating important chemical bonds under mild (typically room temperature) conditions. No additives were required and, in the case of X-H bond activation, water was the only waste product, rendering this an atom efficient procedure for bond activation. This system has great potential for the construction of new catalytic cycles for organic synthesis and small-molecule activation.
机译：报道了一种形式为[Ir（cod）（NHC）（OH）]的氢氧化铱（I）家族（cod = 1,5-环辛二烯，NHC = N-杂环卡宾）。单晶X射线分析和计算方法被用来探索这些新配合物的结构特征和空间特性。模型络合物[Ir（cod）（IiPr）（OH）]（IiPr = 1,3-（二异丙基）咪唑-2-亚烷基）与包括硼酸和硅化合物在内的多种底物发生反应。另外，通过醇，羧酸，胺和各种sp-，sp〜2-和sp〜3-杂化碳中心可以实现O-H，N-H和C-H键活化，从而可以使用各种新型Ir〜I络合物。这些研究使我们能够探索该基序的激动反应性，揭示出一种多功能且有用的合成子，能够在温和的（通常为室温）条件下激活重要的化学键。不需要添加剂，在X-H键活化的情况下，水是唯一的废产物，这使它成为原子活化键活化的有效方法。该系统在构建用于有机合成和小分子活化的新催化循环方面具有巨大潜力。

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