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Pregled bibliografske jedinice broj: 139462

Zbornik radova

Autori: Škorić, Irena; Basarić, Nikola; Marinić, Željko; Višnjevac, Aleksandar; Kojić-Prodić, Biserka; Šindler-Kulyk, Marija
Naslov: Photochemistry of diheteroaryl substituted o-divinylbenzenes
Izvornik: 13th European Symposium on Organic Chemistry : Programme & abstractsCavtat :
Skup: 13th European Symposium on Organic Chemistry
Mjesto i datum: Cavtat-Dubrovnik, Hrvatska, 10.-15.09.2003.
Ključne riječi: synthesis; photochemistry; cycloaddition; cyclobutanes; cyclophanes; benzobicyclo
Sažetak:
Furan (1a) and benzo[b]furan (1b) derivatives of o-divinylbenzenes give upon irradiation in diluted solutions furo- and benzofuro-benzobicyclo[3.2.1]octadiene structures 3, respectively. No intramolecular cycloaddition was found upon irradiation of naphthofuran derivative 1c under the same conditions in diluted solution. The only product that have been observed were the traces of dimeric cyclobutane derivatives. The intermolecular cycloaddition was explained by the fast excimer formation. In disubstituted o-divinylbenzenes, compounds 2a-c, the possibility of the intramolecular excimer formation is introduced. On irradiation of these compounds the intra- and intermolecular cycloaddition processes have been observed and formation of benzobicyclo[3.2.1]octadiene structures (3), cyclophanes (4) and cyclobutanes (5). Depending on the substituent and concentration of the starting material the ratio of the products varies. The structure determination as well as the reaction mechanism will be discussed.
Vrsta sudjelovanja: Poster
Vrsta prezentacije u zborniku: Sažetak
Vrsta recenzije: Međunarodna recenzija
Projekt / tema: 0125004, 0098059, 0098036
Izvorni jezik: ENG
Kategorija: Znanstveni
Znanstvena područja:
Kemija



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