Cobalt catalyzed hydrogenations: Studies on the stabilization of catalytic intermediates through heteroatom-free pi-acceptor hydrocarbons

钴催化加氢：通过无杂原子π受体碳氢化合物稳定催化中间体的研究

• 批准号: 263278476
• 负责人: Professor Dr. Axel Jacobi von Wangelin
• 金额: --
• 依托单位: Institut für Anorganische und Angewandte Chemie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/263278476?language=en
• 关键词: Cobalt; catalyzed; hydrogenations; Studies; stabilization

This collaborative project involves the synthesis of homoleptic and heteroleptic cobalt complexes bearing diverse pi-hydrocarbon ligands (i.e. alkenes, arenes, cyclopentadienyls), their applications to catalytic hydrogenations of unsaturated C=C- and C=X-bond systems, and the elucidation of reaction mechanisms by spectroscopic (NMR, EPR, MS), kinetic (KIE, poisoning) and theoretical (DFT) methods. The proposed actions will address the suitability of electron-rich cobalt complexes with simple alkene and arene ligands as active and selective hydrogenation catalysts. The use of cobalt-arene/alkene precatalysts in low oxidation states is conceptually different from cobalt catayzed reactions with higher oxidized cobalt atoms and heteroatom-donor ligands. At the end of this project, a detailed comparison to literature-known heteroatom-donor ligand/metal complexes will be available which may allow the development of highly active hydrogenation catalysts.

该合作项目包括合成具有不同π-烃配体（即烯烃，芳烃，环戊二烯基）的均配和杂配钴配合物，其在不饱和C = C-和C = X-键系统的催化氢化中的应用，以及通过光谱（NMR，EPR，MS），动力学（KIE，中毒）和理论（DFT）方法阐明反应机理。提出的行动将解决适合的富电子钴络合物与简单的烯烃和芳烃配体作为活性和选择性加氢催化剂。 使用低氧化态的钴-芳烃/烯烃预催化剂在概念上不同于具有较高氧化的钴原子和杂原子供体配体的钴催化反应。在这个项目的最后，一个详细的比较，文献中已知的杂原子供体配体/金属配合物将是可用的，这可能会允许开发高活性的加氢催化剂。

项目成果

Cobalt-Catalyzed Hydrogenations via Olefin Cobaltate and Hydride Intermediates

• DOI: 10.1021/acscatal.9b01584
• 发表时间: 2019-07
• 期刊: ACS Catalysis
• 影响因子: 12.9
• 作者: Sebastian Sandl;Thomas M. Maier;N. P. van Leest;Susanne Kröncke;Uttam Chakraborty;S. Demeshko;K. Koszinowski;B. de Bruin;F. Meyer;M. Bodensteiner;C. Herrmann;R. Wolf;A. Jacobi von Wangelin

CC Hydrogenations with Iron Group Metal Catalysts

• DOI: 10.1002/9783527699087.ch5
• 发表时间: 2018-12
• 期刊: Non-Noble Metal Catalysis
• 作者: Tim N. Gieshoff;A. J. V. Wangelin

Olefin-Stabilized Cobalt Nanoparticles for C=C, C=O, and C=N Hydrogenations.

• DOI: 10.1002/chem.201705366
• 发表时间: 2018-03
• 期刊: Chemistry
• 作者: Sebastian Sandl;F. Schwarzhuber;S. Pöllath;J. Zweck;A. Jacobi von Wangelin

Recyclable cobalt(0) nanoparticle catalysts for hydrogenations

• DOI: 10.1039/c8cy00595h
• 发表时间: 2018-05-21
• 期刊: CATALYSIS SCIENCE & TECHNOLOGY
• 影响因子: 5
• 作者: Bueschelberger, Philipp;Reyes-Rodriguez, Efrain;Wolf, Robert
• 通讯作者: Wolf, Robert