Bicyclo(3,2, 1 )‐2‐octanon (I) reagiert mit Thallium(III)‐nitrat (II) in Methanol über eine Enolisierung und Epoxidierung zum Ester (IIIa), der zu (IIIb) hydrolysiert wird.
Bicyclo(3,2, 1 )‐2‐octanon (I) reagiert mit Thallium(III)‐nitrat (II) in Methanol über eine Enolisierung und Epoxidierung zum Ester (IIIa), der zu (IIIb) hydrolysiert wird.
Treatment of 4‐chromanones 1a‐g with thallium(III) nitrate in acidic methanol results mainly in dehydrogenation, whereas α‐methoxylation and/or Taylor‐McKillop rearrangement predominate in trimethyl orthoformate. The mechanistic features of these oxidations are briefly discussed.
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