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Photo-oxygenation of 1,8-cineole by molecular oxygen catalysed by (Bu4N)4W10O32

✍ Scribed by J. Zakrzewski; C. Giannotti

Book ID: 103993818
Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 344 KB
Volume: 63
Category: Article
ISSN: 1010-6030
DOI: 10.1016/1010-6030(92)85133-f

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✦ Synopsis

The irradiation (A > 280 nm) of oxygen-saturated solutions of l&cineole containing catalytic amounts of (Bu.+N)~W,,O,, leads to the oxygenation of this natural product. After subsequent treatment with pyridinium chlorochromate, 5-and 6-k&o derivatives of l,S-cineole are obtained in the ratio of 2.5:1. This regioselectivity is compared with that observed in the oxidation of 1,8-cineole by chemical oxidants and microorganisms.

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