Reductive Couplings of 2-Halopyridines without External Ligand: Phosphine-Free Nickel-Catalyzed Synthesis of Symmetrical and Unsymmetrical 2,2′-Bipyridines
Authors:
- 24 December 2013
- journal article
- research article
- Published by American Chemical Society (ACS) in The Journal of Organic Chemistry
- Vol. 79 (2) , 777-782
Abstract
An unexpectedly facile synthetic approach for symmetrical and unsymmetrical 2,2′-bipyridines through the Ni-catalyzed reductive couplings of 2-halopyridines was developed. The couplings were efficiently catalyzed by 5 mol % of NiCl2·6H2O without the use of external ligands. A variety of 2,2′-bipyridines including caerulomycin F have been efficiently synthesized.Keywords
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