Photochemical formation of 4 '-N,N-dimethylamino-3-hydroxyflavone in hydrocarbon solutions of 4-N,N-dimethylamino-2 '-hydroxychalcone.

Authors
Brack, TL Conti, S Radu, C Wachter-Jurcsak, N
Citation
Tl. Brack et al., Photochemical formation of 4 '-N,N-dimethylamino-3-hydroxyflavone in hydrocarbon solutions of 4-N,N-dimethylamino-2 '-hydroxychalcone., TETRAHEDR L, 40(21), 1999, pp. 3995-3998
Citations number
13
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON LETTERS
ISSN journal
00404039 → ACNP
Volume
40
Issue
21
Year of publication
1999
Pages
3995 - 3998
Database
ISI
SICI code
0040-4039(19990521)40:21<3995:PFO4'I>2.0.ZU;2-E
Abstract
The appearance of a fluorescence emission band at 553 nm from hydrocarbon s olutions of 4-N,N-dimethylamino-2'-hydroxychalcone was found to he sensitiv e to the presence of dissolved oxygen and exposure to ambient visible light . The 390 nm peak of this band's excitation profile along with the fluoresc ence maximum suggest that a low yield photoreaction occurs leading to the f ormation of the highly fluorescent 4'-N,N-dimethylamino-3-hydroxyflavone. ( C) 1999 Elsevier Science Ltd. All rights reserved.