Photochemical reactions. 147th Communication. Further investigation of the photochemistry of 5,6-epoxy-5,6-dihydro-?-ionone: Product formationvia a carbonyl-ylide intermediate
作者:Anthony O'Sullivan、Bruno Frei、Oskar Jeger
DOI:10.1002/hlca.19860690305
日期:1986.5.7
On π,π*-excitation of the epoxyenone (E)-1 (λ = 254 nm, MeCN), in addition to the previously isolated compounds 2–9, the new products 10–12, derived from the ylide intermediate c were isolated. Further evidence for the ylide c was obtained by the rapid racemization of the optically active epoxyenone (−)-(E)-1.
Chemistry of 1,2,4-Trioxanes: Metal-Induced Deoxygenation and Rearrangement of the 1,2,4-Trioxane Obtained by Photooxidation of β-Ionone
作者:Mirta Mischne
DOI:10.1055/s-2002-33637
日期:——
The reactivity of 2,2,6,8-tetramethyltricyclo(6.2.2.01,6)dodecene (2) toward different metal salts has been explored. In the presence of Fe(II), Sn(II) and Ce(IV) ions, compound 2 underwent a rearrangement process to afford acyclic triketones Z-3 and E-3. The action of Zn powder in acetic acid resulted in an unexpected formation of furan 4 in high yield.