Tetrahedron Letters p. 2317 - 2320 (1980)
Update date:2022-08-03
Topics:
Saito, Isao
Shimozono, Koji
Miyazaki, Seiji
Matsuura, Teruo
Wavelength dependent photoadditions of 6-cyano-1,3-dimethyluracil to phenylacetylenes are described.Photolysis with Pyrex-filtered light gave the fused cyclobutenes (3,9), whereas irradiation with 254-nm light afforded the rearranged adducts (5,11).The structures of the adducts were established by X-ray analyses.
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