Highly Efficient Rh(I) Homo- and Heterogeneous Catalysts for C–N Couplings via Hydrogen Borrowing,Inorganic Chemistry

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Highly Efficient Rh(I) Homo- and Heterogeneous Catalysts for C–N Couplings via Hydrogen Borrowing
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2017-11-13 00:00:00 , DOI: 10.1021/acs.inorgchem.7b02586
Chin M. Wong _{1,

2} , Matthew B. Peterson _{1,

2} , Indrek Pernik ₁ , Roy T. McBurney ₁ , Barbara A. Messerle ₁

Affiliation

Rhodium(I) complexes were explored as catalysts for the hydrogen borrowing reactions of amines and alcohols. Bidentate carbene-triazole ligands were readily synthesized via “click” reactions which allowed a diversity of ligand backbones to be accessed. The catalytic transformations are highly efficient, able to reach completion in under 6 h, and promote C–N bond formation across a range of primary alcohol and amine substrates. Moreover, site-selective catalysis can be achieved using substrates with more than one reactive site. A rhodium(I) complex covalently attached to a carbon black surface was also deployed in the hydrogen borrowing coupling reaction of aniline with benzyl alcohol. This represents the first report of a heterogeneous rhodium catalyst used for hydrogen borrowing.

中文翻译：

高效的氢借用Rh（I）均相和异构催化剂用于C–N偶联

研究了铑（I）配合物作为胺和醇的氢借入反应的催化剂。可以通过“点击”反应轻松合成二齿卡宾-三唑配体，从而可以使用各种配体骨架。催化转化是高效的，能够在6小时内完成，并促进了一系列伯醇和胺底物上C–N键的形成。此外，使用具有一个以上反应性位点的底物可以实现位点选择性催化。共价附于炭黑表面的铑（I）络合物也被部署在苯胺与苯甲醇的氢借位偶联反应中。这是用于氢借入的非均相铑催化剂的首次报道。

更新日期：2017-11-13

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