Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Polish Journal of Chemistry

1 2006

Powiadomienia systemowe

Sesja wygasła!

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: questiomycin

Sortuj według:

Ogranicz wyniki do:

A New Approach to Synthesis of Questiomycin A: Oxidative Cyclocondensation of ortho-Aminophenol

Giurg M., Wiech E., Piekielska K., Gębala M., Młochowski J., Wolański M., Ditkowski B., Peczyńska-Czoch W.

Polish Journal of Chemistry

2006

Vol. 80, nr 2

297-306

Oxidation of ortho-aminophenol (1) to 2-amino-3H-phenoxazin-3-one (2) by air,manganese( IV) oxide, hydrogen peroxide or tert-butylhydroperoxide in the presence of different activators including such enzymes as laccase and peroxidase was studied. The most effective oxidants were air/Co(salen), MnO2/2,6-dicarboxypyridine complex 3k, H2O2/ebselen, H2O2/2,2'-dicarbamoylphenyldiphenyl disenide and TBHP/diphenyl diselenides 4d and 4e. Laccase and peroxidase were less active agents. The six-electron cyclocondensation mechanism is discussed.