Y. Okamoto et al., INTRAMOLECULAR REARRANGEMENT OF BIS(3,4-METHYLENEDIOXYPHENYL) METHYLPHOSPHONATE INDUCED BY SINGLE ELECTRON-TRANSFER OXIDATION, Phosphorus, sulfur and silicon and the related elements, 117, 1996, pp. 129-138
Photo-sensitized oxidation of bis(3,4-methylenedioxyphenyl) methylphos
phonate (1) with 9,10-dicyanoanthracene (DCN) in MeCN gave 3,4-methyle
nedioxyphenyl)-3,4-methylenedioxyphenyl methylphosphonate (2) selectiv
ely through an intramolecular rearrangement of 3,4-methylenedioxypheny
l group. Similar results were obtained by oxidation with Fe(phen)(3)(3
+)) and by gamma-radiloysis in 1,2-dichloroethane. Upon direct UV-irra
diation of 1 in MeOH, 2 and bis(3,4-methylenedioxy)biphenyl (3) were o
btained.