Asymmetric [2 + 2] cycloaddition of ketene with aldehydes catalysed by chiral bissulfonamide–trialkylaluminium complexes
- 1 January 1994
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 19,p. 2281-2282
- https://doi.org/10.1039/c39940002281
Abstract
Asymmetric [2 + 2] cycloaddition of ketene with the aldehydes 1a–g, catalysed by 10 mol% of C2-symmetric bissulfonamide 2a–c–R3Al complexes afforded optically active 4-substituted oxetan-2-ones 3a–g in up to 74% enantiomeric excess.Keywords
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