Regiospecific synthesis of 5,7-disubstituted quinoxalino[2,3-b]phenazines
Date
2002ISSN
1424-6376Source
ArkivocVolume
2002Issue
6Pages
175-191Google Scholar check
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Hydrogenation of the readily prepared dinitrobenzenediamines 7 followed by air oxidation affords the green colored 5,7-disubstituted-5H,12H-quinoxalino[2, 3-b]phenazines 3 in good yields. Mechanistic rationale, compound characterisation and full experimental details are provided.