A new aldol reaction via cerium enolates
β Scribed by Tsuneo Imamoto; Tetsuo Kusumoto; Masataka Yokoyama
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- French
- Weight
- 235 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Cerium enolates formed from cerium (III) chloride and lithium enolates undergo aldol reaction with ketones or sterically crowded aldehydes to afford the corresponding R-hydroxyketones in high yields.
Although much progress has been made in the cross-aldol reaction of various metal enolates with aldehydes, 1,2) the analogous coupling between two different
π SIMILAR VOLUMES
Aldol reaetionsof chelatedamino acid esterenolateswith chiral aldehydesgives rise to polyhydroxylated aminoacidain a highlystereoaelective fmhion.Theaeoxygenated aminoacidscanbe convertedinto polyhydroxylatedpipecolinicacids and azaaugarsby cyclizationusingthe Mitaunobu reaction.A interesting epimer