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Transition-metal-catalyzed reactions promoted by cyclic (alkyl or aryl)(amino)carbene ligands
Chem ( IF 23.5 ) Pub Date : 2022-06-17 , DOI: 10.1016/j.chempr.2022.05.019
Lixing Zhao , Xiaoming Zeng

Cyclic (alkyl or aryl)aminocarbenes (CAACs/CArACs) have been prepared by replacement of one of the amino substituents of normal (diamino)carbenes (NHCs) by alkyl or aryl scaffolds, showing stronger nucleophilicity and electrophilicity than commonly used phosphine and NHC ligands. As a result, their use in tuning the electronic properties and steric environments of coordinated metals in catalytic reactions is of great interest. Significant progress in the field has been made, showing the interesting ability of CAACs/CArACs as ligands in promoting organic reactions. A broad range of catalytic reactions, including hydroamination, hydrogenation, olefin metathesis, borylation, and other transformations, have been developed with CAAC/CArAC ligands addressing the synthetic challenges associated with molecular construction. This review demonstrates the development of organic reactions with CAAC/CArAC ligands from the view of synthetic chemistry, focusing on the discussion and elucidation of related mechanisms for insight into the discovery of new reactions.



中文翻译:

环状(烷基或芳基)(氨基)卡宾配体促进的过渡金属催化反应

环状(烷基或芳基)氨基卡宾(CAACs/CArACs)已通过用烷基或芳基支架取代正(二氨基)卡宾(NHCs)的氨基取代基之一制备,显示出比常用的膦和NHC配体更强的亲核性和亲电性. 因此,它们在调节催化反应中配位金属的电子特性和空间环境方面的应用引起了人们的极大兴趣。该领域已取得重大进展,显示出 CAACs/CArACs 作为配体在促进有机反应方面的有趣能力。使用 CAAC/CArAC 配体开发了广泛的催化反应,包括加氢胺化、氢化、烯烃复分解、硼化和其他转化,以解决与分子构建相关的合成挑战。

更新日期:2022-06-17
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