What Wanzlick Did Not Dare To Dream: Cyclic (Alkyl)(amino)carbenes (cAACs) as New Key Players in Transition‐Metal Chemistry
What Wanzlick Did Not Dare To Dream: Cyclic (Alkyl)(amino)carbenes (cAACs) as New Key Players in Transition‐Metal Chemistry
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DOI：
10.1002/ejic.201700397
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发表时间：
2017-08
影响因子：
2.3
通讯作者：
Ursula S. D. Paul;U. Radius
中科院分区：
文献类型：
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作者：
Ursula S. D. Paul;U. Radius
自2005年首次报道了环烷基(氨基)卡宾(CAAC)的合成以来，这类卡宾在主族元素化学和过渡金属化学中取得了胜利。CAAC易于合成，是迄今已知的最亲核(σ供体)和同时最亲电(π接受)的卡宾之一。这些性质导致了cAAC在主族元素化学中的广泛应用，例如，在小分子化合物的活化和焓强键的活化，以及在高活性主族元素化合物的稳定方面。它们还被证明在过渡金属化学中具有突出的配体性质，例如，在稳定不寻常的低价过渡金属络合物方面，导致了极高活性但坚固的催化剂。本文简要综述了以低氧化态为主的CAAc连接过渡金属化合物，重点介绍了镍的络合物，并对其在配位化学和催化方面的一些最新进展作了个人介绍。
The first synthesis of cyclic (alkyl)(amino)carbenes (cAACs) was reported in 2005, and since then this class of carbenes has been on a victory tour in main-group-element and transition-metal chemistry. CAACs are easy to synthesize and among the most nucleophilic (σ-donating) and simultaneously most electrophilic (π-accepting) carbenes known to date. These properties have led to a vast number of applications of cAACs in main-group-element chemistry in, for example, the activation of small-molecule compounds and enthalpically strong bonds, as well as in the stabilization of highly reactive main-group-element compounds. They also proved to possess outstanding ligand properties in transition-metal chemistry in, for example, the stabilization of unusual low-valent transition-metal complexes, leading to enormously highly active but robust catalysts. Here a brief overview of cAAC-ligated transition-metal compounds, mainly in low oxidation states, with an emphasis on nickel complexes, is provided, and a personal account of some of the recent developments in the use of cAACs in coordination chemistry and catalysis is given.