Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 142, Issue 28, Pages 12324-12332Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.0c04448
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Funding
- Institute for Basic Science [IBSR010-D1]
- National Research Foundation of Korea (NRF) [NRF-2019H1A2A1076213]
- National Research Foundation of Korea [2019H1A2A1076213] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Herein, we report the development of a tailored cobalt catalyst system of Cp*Co(III)(LX) toward intramolecular C-H nitrene insertion of azidoformates to afford cyclic carbamates. The cobalt complexes were easy to prepare and bench-stable, thus offering a convenient reaction protocol. The catalytic reactivity was significantly improved by the electronic tuning of the bidentate LX ligands, and the observed regioselectivity was rationalized by the conformational analysis and DFT calculations of the transition states. The superior performance of the newly developed cobalt catalyst system could be broadly applied to both C(sp(2))-H and C(sp(3))-H carbamation reactions under mild conditions.
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