Journal ArticleDOI
Photochemical cycloadditions of organic compounds
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TLDR
In this article, the photochemical conversion of oxobicyclic analogues of norbornadiene to the corresponding oxoquadricyclenes was studied, and finally the sensitized 1,2-photoaddition of citraconic anhydride to furan was accomplished.Abstract:
— Oxetanes were synthesized by 1,2-photoaddition of benzophenone to several methyl-substituted furans. The photochemical conversion of oxobicyclic analogues of norbornadiene to the corresponding oxoquadricyclenes was studied, and finally the sensitized 1,2-photoaddition of citraconic anhydride to furan was accomplished.
RESUMEN
Se han sintetizado oxetanos por fotoadicion 1,2 de benzofenona a distintos metil furanos. Se ha estudiado la conversion fotoquimica de analogos oxobiciclicos del norbonadieno, y finalmente se ha logrado la fotoadicion 1,2 sensitivizada de anhidrido citraconico a furano.read more
Citations
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Photoaddition of 2,3-dimethylmaleic anhydride to selenophthene†
D. Pacheco,C. Rivas,F. Vargas +2 more
TL;DR: In this paper, the properties of selenophene and its methyl derivatives as substrates for excited carbonyl compounds and for methylmaleic anhydride derivatives in photosensitized reactions were tested.
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Application of the selective 13C{1H} nuclear Overhauser effect to structure elucidation of photoadducts derived from maleic anhydrides and thiophene
TL;DR: In this article, the 13C NMR spectra of a representative series of photoadducts derived from methylmaleic anhydrides and thiophene, containing the same basic carbon skeleton, were studied in order to establish a model for future structure elucidation of similar compounds.
Journal ArticleDOI
Synthesis of an elusive oxetane by photoaddition of benzophenone to thiophene in the presence of a Lewis acid
TL;DR: In this paper, a photocycloaddition promoted by an electron transfer mechanism is proposed for the first time to prepare an oxetane by photoadding of benzophenone to thiophene in presence of BF 3.
Journal ArticleDOI
Decomposition studies of photoaddition products derived from five-membered heterocyclics and maleic anhydride and maleimide derivatives by DSC, TG and MS
TL;DR: In this article, the photoproducts derived from the photosensitized cycloaddition reactions between different furan and thiophene derivatives and methyl substituted maleic anhydrides and maleimides were investigated.
Journal ArticleDOI
(2 + 2) Photosensitized cycloadditions of maleic anhydride derivatives to selenophene and tellurophene derivatives
TL;DR: The photoadditions of 2,3-dimethylmaleic anhydride to selenophene (C. Rivas, D. Pacheco, C. Vargas, J. Torrealba, D as discussed by the authors, R. Machado, G. Aguiar, Monatsh.
References
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Journal ArticleDOI
Mechanisms of Photoreactions in Solutions. I. Reduction of Benzophenone by Benzhydrol
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Photosensitized cycloaddition reactions1
Journal ArticleDOI
Dimerization Reactions in Sunlight.
TL;DR: In this article, the photo-experiments mentioned below have been carried out in a sealed "Monax" or "Pyrex" glass tube (Schlenk tube) in an atmosphere of dry carbon dioxide; in all cases the dark experiments were negative.
Journal ArticleDOI
Vierringsynthesen durch photosensibilisierte Cycloaddition von Dimethylmaleinsäureanhydrid an Olefine
TL;DR: The cycloaddition von Dimethyl-maleinsaureanhydrid an Thiophen und sieben Olefine verschiedener Typen fuhrt glatt zu Cyclobutanderivaten.