Year 2007, Month 6 (Section Full Articles, Page 1130)
Photocyclization of 2-azido-1-(4-tertbutylphenoxy)-9,10-anthraquinone in the presence of substituted phenols
L. S. Klimenko, I. A. Os´kina, V. M. Vlasov, I. Yu. Bagryanskaya, and Yu. V. Gatilov
New types of phototransformations in the quinone series, viz., photocyclizations of 1-aryloxy-2-azido-9,10-anthraquinone in the presence of phenols, were studied. The photolysis affords mainly 5H-naphtho[2,3-c]phenoxazine-8,13-diones, in which the nitrogen atom is covalently bound to the phenyl ring of the attached phenol. As a result, complex polycyclic derivatives of phenoxazines were prepared in high yields in one step.
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