Chiral crown complexes catalyse Michael addition reactions to give adducts in high optical yields
- 1 January 1981
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 13,p. 625-628
- https://doi.org/10.1039/c39810000625
Abstract
Chiral crowns complexed to potassium bases catalyse with high turnover numbers the Michael additions of a β-ketoester to methyl vinyl ketone, and of two phenylacetic esters to methyl acrylate, to give products of 99–60% optical purity with a configurational bias rationalizable on the basis of steric effects.Keywords
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