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Synfacts 2007(1): 0042-0042  
DOI: 10.1055/s-2006-955677
Synthesis of Materials and Unnatural Products
© Georg Thieme Verlag Stuttgart · New York

Fluorophore Formed in Ambient Light by two Ring Closures

Contributor(s): Timothy M. Swager, Eric L. Dane
A. C. Benniston*, D. B. Rewinska
Newcastle University, UK
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Publikationsdatum:
15. Dezember 2006 (online)

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Significance

The authors report a facile ring closure that occurs by irradiation with white light, transforming the nonemissive molecule 1 to the fluorophore 2. The ring closure is irreversible, and none of the product resulting from a single ring closure could be identified. The reaction occurs in N2-purged acetonitrile without the prescence of an added oxidant. The authors plan further investigation into the mechanism of this interesting transformation.