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

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

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Bibliographic Details
Published in:Mendeleev communications 2001, Vol.11 (3), p.90-91
Main Authors: Kroulík, Jiří, Čejka, Jan, Šebek, Pavel, Sedmera, Petr, Halada, Petr, Havlíček, Vladimír, Nešpůrek, Stanislav, Kratochvíl, Bohumil, Kuthan, Josef
Format: Article
Language:English
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Summary: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
ISSN:0959-9436
DOI:10.1070/MC2001v011n03ABEH001430