We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Manganese-catalyzed hydroboration of carbon dioxide and other challenging carbonyl groups.
- Authors
Erken, Christina; Kaithal, Akash; Sen, Suman; Weyhermüller, Thomas; Hölscher, Markus; Werlé, Christophe; Leitner, Walter
- Abstract
Reductive functionalization of the C=O unit in carboxylic acids, carbonic acid derivatives, and ultimately in carbon dioxide itself is a challenging task of key importance for the synthesis of value-added chemicals. In particular, it can open novel pathways for the valorization of non-fossil feedstocks. Catalysts based on earth-abundant, cheap, and benign metals would greatly contribute to the development of sustainable synthetic processes derived from this concept. Herein, a manganese pincer complex [Mn(Ph2PCH2SiMe2)2NH(CO)2Br] (1) is reported to enable the reduction of a broad range of carboxylic acids, carbonates, and even CO2 using pinacolborane as reducing agent. The complex is shown to operate under mild reaction conditions (80-120 °C), low catalyst loadings (0.1-0.2 mol%) and runs under solvent-less conditions. Mechanistic studies including crystallographic characterisation of a borane adduct of the pincer complex (1) imply that metal-ligand cooperation facilitates substrate activation. Catalytic reduction of CO2 and biomass derivatives is of great current interest from a sustainable chemistry perspective. Here, the authors report a manganese pincer complex able to reduce under mild conditions carboxylic acids, carbonates and even carbon dioxide using pinacolborane as reducing agent.
- Publication
Nature Communications, 2018, Vol 9, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-018-06831-9