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- W2950744041 abstract "Irradiation of a benzene solution containing methyl p-(1-pyrenylmethoxymethyl)cinnamate (1a) with a high-pressure Hg lamp through Pyrex filter stereoselectively gave an intramolecular (2π + 2π) photocycloadduct (2a) in an 83% yield in a site-selective manner at the 4,5-position of the pyrene ring. Similar irradiation of an ortho-substituted derivative (3) afforded the corresponding (2π + 2π) cycloadduct (4) as a sole product at the 9,10-position of pyrene. The site-selective photocycloaddition can be reasonably explained by the intramolecular sandwich-type singlet exciplexes between the pyrene and phenyl rings." @default.
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- W2950744041 date "2000-09-21" @default.
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- W2950744041 title "Site-Selective and Stereoselective Intramolecular (2π + 2π) Photocycloaddition of Arylalkenes to Pyrene and Its Photocycloreversion" @default.
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- W2950744041 doi "https://doi.org/10.1021/ol000193v" @default.
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