Naslov
Synthesis and photochemical transformations of new chloro-substituted butadiene chromophores

Autori
Vuk, Dragana ; Marinić, Željko ; Škorić, Irena

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
Central European Conference on Photochemistry, Book of Abstracts / - , 2014, 80-80

Skup
Central European Conference on Photochemistry

Mjesto i datum
Bad Hofgastein, Austrija, 09.02.2014. - 13.02.2014

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
butadiene; chlorine; photochemistry; reaction mechanism; spectroscopy

Sažetak
Previous publications on the photochemistry of different heteroaryl substituted hexatrienes showed interesting intramolecular cycloaddition reactions and the formation of bicyclo[3.2.1] octadienes as unsaturated structural analogues of the bicyclo[3.2.1]octane skeleton which is found in numerous biologically important active natural products. The photochemical behaviour of mono- and dichloro-substituted butadiene derivatives was studied at low concentrations. These compounds display diverse photochemical behaviour. The α-chloro derivatives photocyclize to give six-membered ring photoproducts. p-Chloro substituted butadienes undergo intramolecular [2 + 2] cycloaddition followed by formation of benzobicyclic structures. The steric hindrance of chlorine(s) in a-position(s) cause a greater deviation from planarity, relative to p-substitution, and shift conformer equilibria and affects the reaction pathways and yields.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA