HataNorisuke, OguroToshiyuki
Jun 5, 1978
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Journal
Chemistry Letters
Abstract
The photochemical behavior of 2-cyanoquinoline N-oxide and 4-methylquinoline N-oxide in aqueous ethanol containing potassium iodide or ethyl iodide was examined. The results indicate that Process I (N-oxide → lactam) proceeds via a protonation of the N→O group through a hydrogen-bonding interaction in the S1 state, whereas Process II (N-oxide → oxazepine) occurs with the formation of oxaziridine intermediate from the S1 state.