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J Am Chem Soc
; 123(23): 5396-400, 2001 Jun 13.
Article
in English
| MEDLINE
| ID: mdl-11389617
ABSTRACT
Alkyne-dicobalt hexacarbonyl complexes have been studied by DFT to examine whether electronic differences in the acetylenic substituents could play a role in determining the regiochemical outcome in the Pauson-Khand reaction. It appears that in some instances the regiochemistry is, in fact, governed exclusively by the electronic nature of the acetylenic substituents through the discriminant loss of a carbon monoxide ligand.