PHOTOOXYGENATION OF STILBENES IN ZEOLITE BY EXCITATION OF THEIR CONTACT CHARGE-TRANSFER COMPLEXES WITH OXYGEN

Authors
TAKEYA H KURIYAMA Y KOJIMA M
Citation
H. Takeya et al., PHOTOOXYGENATION OF STILBENES IN ZEOLITE BY EXCITATION OF THEIR CONTACT CHARGE-TRANSFER COMPLEXES WITH OXYGEN, Tetrahedron letters, 39(33), 1998, pp. 5967-5970
Citations number
14
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron letters → ACNP
ISSN journal
00404039
Volume
39
Issue
33
Year of publication
1998
Pages
5967 - 5970
Database
ISI
SICI code
0040-4039(1998)39:33<5967:POSIZB>2.0.ZU;2-C
Abstract
Contact charge transfer (CCT) complexes of trans-stilbenes with oxygen molecules were formed in zeolite NaY. Excitation of the CCT bands by a 313-nm wavelength light produced the corresponding benzaldehydes thr ough an electron transfer reaction to generate stilbene cation radical s and superoxide anion radical. Irradiation of the CCT complexes by a 254-nm wavelength light,by contrast, gave rise to isomerization and fo rmation of phenanthrene without yielding any oxygenation products, as in the photoreaction under oxygen in solution. (C) 1998 Elsevier Scien ce Ltd. All rights reserved.