Photodimerization of 1 H ‐azepine‐2,7‐dione | Zendy

Takabatake Tohru | Zendy; Hasegawa Minoru | Zendy

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Photodimerization of 1 H ‐azepine‐2,7‐dione

Author(s) -

Takabatake Tohru,

Hasegawa Minoru

Publication year - 1994

Publication title -

journal of heterocyclic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.321

H-Index - 59

eISSN - 1943-5193

pISSN - 0022-152X

DOI - 10.1002/jhet.5570310136

Subject(s) - chemistry , azepine , dimer , monomer , excimer , irradiation , photochemistry , molecule , absorption spectroscopy , mercury vapor lamp , fluorescence , high pressure , polymer chemistry , medicinal chemistry , organic chemistry , polymer , optics , physics , engineering physics , nuclear physics , engineering

1 H ‐Azepine‐2,7‐dione 2 afforded photodimer 8 by irradiation using a high or low pressure mercury lamp. Photodimer 8 had a unique structure which must have formed with the prototropy in one of the two molecules of compound 2 . Measurement of the fluorescence spectra of 2 indicated a spectrum of the excimer during the dimerization of 2 . Irradiation of the dimer of 2 at its wave‐length of maximal absorption failed to cause it to change into a monomer of 2 .

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