Heterocyclic syntheses with β-ketosulfoxides. I. New syntheses of chromones, flavones, thioindigo and thioflavones
Author:
Publisher
Wiley
Subject
Organic Chemistry
Link
http://onlinelibrary.wiley.com/wol1/doi/10.1002/jhet.5570090137/fullpdf
Reference6 articles.
1. Reactions of carbanions of dimethyl sulfoxide and dimethyl sulfone with isocyanates, isothiocyanates, and other electrophilic reagents. Preparation of .beta.-amido and .beta.-thioamido sulfoxides and sulfones
2. Preparation and Pummerer Rearrangement of β-Ketosulfoxides
3. This is a mixture of diastereoisomers. Recrystallization to the constant melting point gave a 40% yield of a product melting at 104-106°.
4. Zur Kenntnis der Chromanone. (I. Mitteilung zur Brasilin‐Frage.)
5. Due to lability of this compound, no elemental analysis was obtained. M.p. of the crude: 90-95°.
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