226-47-1Relevant academic research and scientific papers
Prostaglandin H synthase-catalyzed ring oxygenation of 2-naphthylamine: Evidence for two distinct oxidation pathways
Curtis,Tomer,McGown,Eling
, p. 875 - 883 (2007/10/03)
Previous studies showed that prostaglandin H synthase (PHS) cooxidizes 2- naphthylamine (2-NA) to ring-oxygenated products. These metabolites are atypical for a peroxidase-mediated reaction and are completely different from the polymeric nonoxygenated metabolites of 2-NA that are generated with the model peroxidase horseradish peroxidase (HRP). In this study, we investigated possible explanations for the PHS-catalyzed formation of ring-oxygenated 2- NA metabolites. We found that introduction of a peroxyl radical-generated cosubstrate into the HRP/2-NA system resulted in the formation of the same ring-oxygenated products observed in the PHS/2-NA system. 18O2 incorporation studies were utilized to further characterize the source of oxygen in the ring-oxygenated 2-NA metabolites. The data show that, in the case of PHS, ring oxygenation can occur both by peroxyl radical-mediated attack on 2-NA and by direct transfer of peroxide oxygen from PHS to 2-NA.
Oxidations of Aromatic Amines by Superoxide Ion
Crank, George,Makin, Mohammad I. H.
, p. 845 - 855 (2007/10/02)
Superoxide ion acts as a mild and highly selective oxidizing agent for aromatic amines.Aniline and α-naphthylamine were not oxidized, but β-naphthylamine formed dibenzophenazine, dibenzophenazine and 2,2'-azonaphthalen-1-ol. o- and p-Diamines are oxidized to diaminoazobenzenes but m-diamines are unreactive.Similarly o- and p-aminophenols are oxidized to dihydroxyazobenzenes but m-aminophenols are unaffected, and o-mercaptoaniline forms the disulfide.The oxidations are considered to be free-radical processes, initiated by hydrogen abstraction by superoxide from the substrates.The biological significance of the results is discussed.
ORGANIC CHEMISTRY OF SUPEROXIDE. II OXIDATION OF β-NAPHTHYLAMINE - POSSIBLE INVOLVEMENT OF THE HYDROXYL RADICAL
Crank, G.,Makin, M. I. H.
, p. 3159 - 3160 (2007/10/02)
Of a selection of aromatic monoamines examined only β-naphthylamine was oxidized by potassium superoxide and formed dibenzophenazine, dibenzophenazine and 1-hydroxy-2,2'-azonaphthalene, the latter product indicating that the hydroxyl radical may be involved in superoxide oxidations.
PHOTOCHEMICAL DECOMPOSITION OF 2-AZIDOPHENAZINE IN ALCOHOLS AND IN THE PRESENCE OF CYANIDE ION
Albini, Angelo,Bettinetti, Gian Franco,Fasani, Elisa,Pietra, Silvio
, p. 13 - 18 (2007/10/02)
The photochemical decomposition of 2-azidophenazine in alcoholic solvents has been investigated. 1-Amino-2-alkoxyphenazines are formed in neutral and (in higher yield and together with 2-amino-1-chlorophenazine) in acidic conditions, while the azepinoquinoxaline 7 is formed in basic conditions.With cyanide ion nucleophilic attack takes place giving 1-amino-2-phenazine carbonitrile.To allow comparison, 2-azidonaphthalene, 2-azidoanthracene and 2-azidoanthraquinone have also been photodecomposed in the conditions in which the most interesting results are obtained from 2-azidophenazine.The mechanism of these reactions is briefly discussed.
Thermal Decomposition of Aromatic Azides. Formation of Phenazines and Related Compounds
Nay, Barry,Scriven, Eric F. V.,Suschitzky, Hans,Thomas, Desmond R.
, p. 611 - 613 (2007/10/02)
The decomposition of some aromatic azides yielding significant amounts of phenazines, and thereby constituting a potential synthetic procedure, is reported.
