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1,5-Diaryl-6,7-dioxabicyclo[3.2.2]nonanes 1a-d (1a: Ar=p-FC 6 H 4 , 1b: Ar=Ph, 1c: Ar=p-MeC 6 H 4 , 1d: Ar=p-MeOC 6 H 4 ) were prepared by a modified method of photo-electron transfer oxygenation, and the reactions of 1 with FeBr 2 were investigated under various conditions. The Fe(II)-induced degradation of 1 afforded various rearrangement products...
Reactions of 1,4-diaryl-2,3-dioxabicyclo[2.2.2]octanes 1a-d (1a: Ar=p-FC 6 H 4 , 1b: Ar=Ph, 1c: Ar=p-MeC 6 H 4 , 1d: Ar=p-MeOC 6 H 4 ) with FeBr 2 in THF afforded 1,4-diarylbutan-1,4-diones 2a-d and 1,4-diaryl-7-oxabicyclo[2.2.1]heptanes 3a-d. On the other hand, 4-aryl-3-cyclohexenones 4c-d and p-substituted phenols 5c-d were obtained in the...
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