Quinazolino-l,2,3-benzotriazines

Quinazolino[3,2-c]l,2,3-benzotriazin-8(7//)-imine (611) was prepared from 4-amino-2-(2-aminophenyl)quinazoline (609) by diazotization, followed by basilication of the resulting diazonium salt (610). The isomeric 

Diazotization of anthraniloanthranilamide (613) gave 3-(2-carbamoyI-phenyl)-l,2,3-benzotriazine-4(3//)-one (614), which underwent base-catalyzed cyclization to the quinazolino[3,2-c]l,2,3-benzotriazin-8-one (615) (78CJC1616). 

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