Efficient Photocycloreversion Reaction of Diarylethenes by Introduction of Cyano Subsutituents to the Reactive Carbons.

Autor: Morimitsu, Kentaro, Kobatake, Seiya, Nakamura, Shinichiro, Irie, Masahiro
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Zdroj: Chemistry Letters; 9/5/2003, Vol. 32 Issue 9, p858, 2p
Abstrakt: Highly efficient photocycloreversion reaction was observed for diarylethene derivatives with cyano groups at the reactive carbons of the thiophene rings. The cycloreversion quantum yield of 1,2-bis(2-cyano-5-phenyl-3-thienyl)perfluorocyclopentene was found to be ca. 30 times larger than that of 1,2bis(2-methyl-5-phenyl-3-thienyl)perfluorocyclopentene. [ABSTRACT FROM AUTHOR]
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