Author
Listed:
- Christina Erken
(Max-Planck-Institute for Chemical Energy Conversion
Institut für Technische und Makromolekulare Chemie, RWTH Aachen University)
- Akash Kaithal
(Institut für Technische und Makromolekulare Chemie, RWTH Aachen University)
- Suman Sen
(Institut für Technische und Makromolekulare Chemie, RWTH Aachen University)
- Thomas Weyhermüller
(Max-Planck-Institute for Chemical Energy Conversion)
- Markus Hölscher
(Institut für Technische und Makromolekulare Chemie, RWTH Aachen University)
- Christophe Werlé
(Max-Planck-Institute for Chemical Energy Conversion)
- Walter Leitner
(Max-Planck-Institute for Chemical Energy Conversion
Institut für Technische und Makromolekulare Chemie, RWTH Aachen University)
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.
Suggested Citation
Christina Erken & Akash Kaithal & Suman Sen & Thomas Weyhermüller & Markus Hölscher & Christophe Werlé & Walter Leitner, 2018.
"Manganese-catalyzed hydroboration of carbon dioxide and other challenging carbonyl groups,"
Nature Communications, Nature, vol. 9(1), pages 1-9, December.
Handle:
RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06831-9
DOI: 10.1038/s41467-018-06831-9
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