Oxazepines are a family of unsaturated heterocycles containing seven atoms, with a nitrogen replacing a carbon at one position and with an oxygen replacing a carbon at one position.[1][2][3]
^Katritzky, A. R.; Ramsden, C. A.; Scriven, E. F. V.; Taylor, R. J. K. (2008-01-01), Katritzky, Alan R.; Ramsden, Christopher A.; Scriven, Eric F. V.; Taylor, Richard J. K. (eds.), "Introduction", Comprehensive Heterocyclic Chemistry III, Oxford: Elsevier, pp. xxi–xxix, ISBN978-0-08-044992-0, retrieved 2023-01-05