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This research was supported by the German Research Foundation (Deutsche Forschungsgemeinschaft).
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Communication
Cobalt-Catalyzed [2+2] Cycloaddition†
Article first published online: 20 AUG 2008
DOI: 10.1002/anie.200801778
Copyright © 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
Treutwein, J. and Hilt, G. (2008), Cobalt-Catalyzed [2+2] Cycloaddition. Angew. Chem. Int. Ed., 47: 6811–6813. doi: 10.1002/anie.200801778
- †
Publication History
- Issue published online: 20 AUG 2008
- Article first published online: 20 AUG 2008
- Manuscript Received: 16 APR 2008
Funded by
- German Research Foundation (Deutsche Forschungsgemeinschaft)
Keywords:
- alkenes;
- alkynes;
- cobalt;
- cycloaddition
Three's a charm, but four's not half bad either: A simple cobalt–diphosphine complex facilitates the synthesis of cyclobutene derivatives through the chemoselective transformation of strained five-membered unsaturated rings with internal alkynes (see scheme). This atom-efficient, intermolecular reaction generates polycyclic products in excellent yields and with excellent exo selectivity. dppp=1,3-bis(diphenylphosphanyl)propane.