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- W2054281924 abstract "Die relative photochemische Umlagerungstendenz von gezielt substituierten 4-Phenyl-1-benzoxepinen 3 zu den entsprechenden 1-Phenyl-2a,7b-dihydrocyclobuta[b]-1-benzofuranen 4 wurde experimentell im Hinblick auf ihre Substituentenabhängigkeit untersucht. Es wird gezeigt, daß sich die gefundenen Effekte von π-Acceptor- oder π-Donorsubstituenten befriedigend auf der Basis eines einfachen störungstheoretischen π-MO-Modells deuten lassen. Heterocyclic Seven-Membered Ring Compounds, XVIII. – The Influence of Different Substituents upon the Photorearrangement of 1-Benzoxepins The relative tendency of a series of 4-phenyl-1-benzoxepins 3 to undergo photochemical isomerizations yielding the corresponding 1-phenyl-2a,7b-dihydrocyclobuta[b]-1-benzo-furans 4 has been investigated experimentally with respect to different substitution patterns. It can be shown that effects of π-acceptor- and π-donor substituents, respectively, are explained well by a simple π MO model based upon perturbation theory." @default.
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- W2054281924 date "1977-12-30" @default.
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- W2054281924 title "Heterocyclische Siebenring-Verbindungen, XVIII. Einfluß der Substituenten auf die photochemische 1-Benzoxepin-Umlagerung" @default.
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- W2054281924 doi "https://doi.org/10.1002/jlac.197719771003" @default.
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