Photoisomerization of 2,4,4,6-tetraaryl-4H-selenopyrans: a new heterocyclic ring contraction

Authors
Kroulik, J Cejka, J Sebek, P Sedmera, P Halada, P Havlicek, V Nespurek, S Kratochvil, B Kuthan, J
Citation
J. Kroulik et al., Photoisomerization of 2,4,4,6-tetraaryl-4H-selenopyrans: a new heterocyclic ring contraction, MENDELEEV C, (3), 2001, pp. 90-91
Citations number
16
Categorie Soggetti
Chemistry
Journal title
MENDELEEV COMMUNICATIONS
ISSN journal
09599436 → ACNP
Issue
3
Year of publication
2001
Pages
90 - 91
Database
ISI
SICI code
0959-9436(2001):3<90:PO2ANH>2.0.ZU;2-1
Abstract
The UV illumination of title compounds 3a,b in acetonitrile solutions leads to corresponding five-membered ring isomers 4a,b, probably, via open-ring intermediates, whereas the photocolouration was observed in the solid state .