Redox behaviour of phenolic porphyrins in basic solutions: a reappraisal.
Phenolic porphyrins 1, 4, and 5 form stable phenoxyl radicals 3, 6, and 7 in deoxygenated as well as oxygenated basic solutions. Mechanistic schemes are presented, involving coupled disproportionation and conproportionation reactions, that do not require oxygen involvement in the redox processes leading to phenoxyl radicals.
Milgrom
L R
LR
Department of Chemistry, Brunel University, Middlesex, UK.
Yahioglu
G
G
Jogiya
N N
NN
D000468:Alkalies; D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals; D015394:Molecular Structure; D010084:Oxidation-Reduction; D010636:Phenols / Q000737:chemistry*; D011166:Porphyrins / Q000737:chemistry*; D012996:Solutions; D013053:Spectrophotometry; D013056:Spectrophotometry, Ultraviolet
D000468:Alkalies; D005609:Free Radicals; D010636:Phenols; D011166:Porphyrins; D012996:Solutions; C042329:phenoxy radical