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ChemInform Abstract: Direct Conversion to 2-Phenyl-4-quinolones via a 4-Alkoxyflavylium Salt from a Naturally Occurring Flavanone.

✍ Scribed by Shingo Sato; Hironobu Kumagai; Shigeru Matsuba; Toshihiro Kumazawa; Jun-ichi Onodera; Masanobu Suzuki

Publisher: John Wiley and Sons
Year: 2010
Weight: 31 KB
Volume: 31
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.200012151

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Direct conversion to 2-phenyl-4-quinolon

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## Abstract A flavanone, in which a hydroxyl group at the 5‐position was protected with a methyl group, converted to the corresponding 5‐methoxy‐2‐phenyl‐4‐quinolone __via__ flavylium salt under mild conditions. Flavanone‐__O__‐rhamnoglucoside, naringin, was also converted to 5‐methoxy‐2‐phenyl‐4‐q

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