SYNTHESIS OF DIHYDROFLAVONOLS AND FLAVONOLS
โ Scribed by MARATHEY, M. G.
- Book ID
- 120506353
- Publisher
- American Chemical Society
- Year
- 1955
- Tongue
- English
- Weight
- 615 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0022-3263
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๐ SIMILAR VOLUMES
FUVONOIS (III) are ueually prepared by the Alga+Flynn-Oyamada reaction 1,2 or by the Allan-Robinson uiethod.3 The new eyntheeie here deeoribed involvee the oxidation of g-hydroxydibeneoylmethanee with performic aoia in ohlorofora, Karrer et al, 4 obeerved the formation of diben~oylcarbinols .=R=RkH;
Epoxidation of a series of poly-oxygenated chalcones with H202 in the presence of poly-ctaminoacids yielded chiral aromatic oxygenated oxiranes in moderate to high optical yields. Lewis acid-catalysed phenylmethanethiol ringopening of the epoxide functionality and subsequent formation of the pyranon