As. Mitchell et Ra. Russell, OXIDATION WITH HYPERVALENT IODINE REAGENTS .2. NOVEL CYCLOHEXADIENONES AS PRECURSORS FOR THE SYNTHESIS OF ANTHRAQUINONES, Tetrahedron, 53(12), 1997, pp. 4387-4410
The oxidation of substituted phenols with phenyliodonium diacetate in
methanol was found to afford 2,4-cyclohexadienones, 2,5-cyclohexadieno
nes or mixtures of isomers, depending on the substrate being oxidized.
Annulation of these cyclohexadienones with the anion of 3-cyanophthal
ide afforded anthraquinones in high yields. (C) 1997 Elsevier Science
Ltd.