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.
上π,所述epoxyenone的π* -excitation(ë) - 1(λ= 254纳米,MeCN中),在除了先前分离的化合物2 - 9,新产品10 - 12,从内鎓盐中间体衍生Ç分离。内酯c的进一步证据是通过旋光旋光性环氧烯酮(-)-(E)-1的快速消旋而获得的。