Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 21, Pages 6186-6189Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201500939
Keywords
amines; hydrogenation; ligand effects; ruthenium; synthetic methods
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Funding
- National Natural Science Foundation of China [91127041, 20421091, 21472215]
- Chinese Academy of Sciences [XDA07040404]
- Science and Technology Commission of Shanghai Municipality
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A highly efficient catalyst system based on ruthenium-pincer-type complexes has been discovered for N-formylation of various amines with CO2 and H-2, thus affording the corresponding formamides with excellent productivity (turnover numbers of up to 1940000 in a single batch) and selectivity. Using a simple catalyst recycling protocol, the catalyst was reused for 12 runs in N,N-dimethylformamide production without significant loss of activity, thus demonstrating the potential for practical utilization of this cost-effective process. A one-pot two-step procedure for hydrogenation of CO2 to methanol via the intermediacy of formamide formation has also been developed.
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