Catalytic Oxidative Cyclocondensation of o??Aminophenols to 2??Amino??3 H??phenoxazin??3??ones

…, W Peczyńska??Czoch, J Młochowski

Index: Giurg, Miroslaw; Piekielska, Katarzyna; Gebala, Magdalena; Ditkowski, Bartosz; Wolanski, Marcin; Peczynska-Czoch, Wanda; Mlochowski, Jacek Synthetic Communications, 2007 , vol. 37, # 11 p. 1779 - 1789

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Citation Number: 28

Abstract

Abstract The catalytic oxidative cyclocondensation of the o??aminophenols 1a–f was investigated. The oxidants used were air/laccase, H2O2/horseradish peroxidase, H2O2/ebselen (3), and TBHP/diphenyl diselenide 4. The products obtained were 2??amino??3 H??phenoxazin??3??one—questiomycin A, its derivative 2b, and cinnabarinic acid and actinocin (2c, d). Substrates with methyl groups at 4 and 5 positions of benzene ring were ...