J. Phys. Chem. 1985, 89, 779-782 azepine) are formed in the photolyses of aryl azides." 1-Pyrenylnitrene which has a large aromatic ring moiety may be more stable than the relevant tautomer, and it may be the reason why the tautomers could not be observed in 1-pyrenylnitrene. In conclusion, the possible formation scheme of DMAPN is described as lA*
