Bulletin of the Chemical Society of Japan p. 1599 - 1600 (1985)
Update date:2022-08-03
Topics:
Takeno, Noboru
Fukushima, Tohoru
Takeda, Shin-ichi
Kishimoto, Kazuyasu
The reaction of flavanone with "2-pyrrolidone hydrotribromide" in tetrahydrofuran gave 3-bromoflavanone in a good yield.On the other hand, flavone was obtained in 97percent yield when this reaction was carried out in dimethyl sulfoxide at 80 deg C.Under the same conditions, most flavones were obtained from the corresponding flavanones in high purity and good yiels.
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