Naslov
Mechanochemical halogenation of unsymmetrically substituted azobenzenes

Autori
Barišić, Dajana ; Pajić, Mario ; Halasz, Ivan ; Babić, Darko ; Ćurić, Manda

Izvornik
Beilstein journal of organic chemistry (2195-951X) 18 (2022); 680-687

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
azo compounds ; halogenation ; mechanochemistry ; N-halosuccinimide ; palladium(II)

Sažetak
The direct and selective mechanochemical halogenation of C–H bonds in unsymmetrically substituted azobenzenes using N-halosuccinimides as the halogen source under neat grinding or liquid-assisted grinding conditions in a ball mill has been described. Depending on the azobenzene substrate used, halogenation of the C–H bonds occurs in the absence or only in the presence of PdII catalysts. Insight into the reaction dynamics and characterization of the products was achieved by in situ Raman and ex situ NMR spectroscopy and PXRD analysis. A strong influence of the different 4, 4’-substituents of azobenzene on the halogenation time and mechanism was found.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA