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Preparation and reaction of desymmetrised cobalt alkyne complexes

✍ Scribed by David R Carbery; William J Kerr; David M Lindsay; James S Scott; Stephen P Watson

Publisher
Elsevier Science
Year
2000
Tongue
French
Weight
177 KB
Volume
41
Category
Article
ISSN
0040-4039

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✦ Synopsis

Prochiral alkyne hexacarbonyl dicobalt complexes are desymmetrised directly with brucine N-oxide in the presence of a phosphine or phosphite ligand to produce the corresponding phosphorus-containing pentacarbonyl complex with appreciable enantiomeric excess. In Pauson-Khand reactions, it is found that the enantiomeric integrity of the desymmetrised complex is conserved in the cyclopentenone product. Moreover, the major enantiomer obtained in these reactions is opposite to that from a direct brucine N-oxide promoted Pauson-Khand reaction, allowing the preparation of either enantiomeric cyclopentenone in enriched form from a single source of chirality.

πŸ“œ SIMILAR VOLUMES

ChemInform Abstract: Preparation and Rea
ChemInform Abstract: Preparation and Reaction of Desymmetrized Cobalt Alkyne Complexes.
✍ David R. Carbery; William J. Kerr; David M. Lindsay; James S. Scott; Stephen P. πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons βš– 29 KB πŸ‘ 2 views

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