Summary Oxidation of the title compounds yields N- nitrenes which react intramolecularly with electron-rich aryl groups via 7-membered transition states ; substituent effects are in accord with an electrophilic aromatic substitution rather than concerted addition. ... 3-AMINOQUINAZOLONE (1) is one member of a family of N-aminoheterocyclic compounds from which N-nitrenes are generated by 0xidation.l These nitrenes have singlet ground states and react ...