Facile synthesis of arylboronic esters by palladacycle-catalyzed bromination of 2-arylbenzoxazoles and subsequent borylation of the brominated products

Recent Advances in Bromination of Aromatic and Heteroaromatic Compounds

“…In this instance, palladacycle 27 probably acted as a Lewis acid. 45 It is noteworthy that this catalyst was highly efficient. High bromination product yields were attained with only 1 mol% of palladacycle 27.…”

“…A method for brominating 2-arylbenzoxazoles used palladacycle catalyst 27, which was prepared from the corresponding ferrocenylimine (Scheme 19). 45 The bromination occurred at the benzoxazole 6-position and was obviously not ligand-directed. In this instance, palladacycle 27 probably acted as a Lewis acid.…”

Magnetically recoverable and reusable CuFe2O4nanoparticle-catalyzed synthesis of benzoxazoles, benzothiazoles and benzimidazoles using dioxygen as oxidant

“…1 6-Methyl-2-p-tolylbenzo[d]oxazole (3f). 37 Eluent petroleum ether-ethyl acetate (30 : 1). White solid.…”

Cyclopalladated ferrocenylimines with ester groups for Heck and Suzuki coupling reactions

“…In our previous studies, we synthesized a series of cyclopalladated ferrocenylimines, which showed satisfactory reactivities in Heck, Suzuki, Sonogashira, and Kumada reactions [33][34][35][36][37][38][39][40][41]. However, there has recently been considerable interest in the development of new and simple catalysts that can effectively catalyze C-C coupling reactions in water or aqueous media because such catalysts have the potential to be used in industrial systems.…”