Naslov
Solid-state synthesis and catalytic potential of dicyclopalladated azobenzenes

Autori
Pajić, Mario ; Ćurić, Manda ; Juribašić Kulcsár, Marina

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

Izvornik
28HSKIKI : 28th Croatian Meeting of Chemists and Chemical Engineers and 6th Symposium Vladimir Prelog : Book of Abstracts / Rogošić, Marko - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2023, 111-111

Skup
28th Croatian Meeting of Chemists and Chemical Engineers

Mjesto i datum
Rovinj, Hrvatska, 28.03.2023. - 31.03.2023

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
Palladacycles ; Catalysis ; Solid-state ; Mechanochemistry ; C-H bond activation

Sažetak
Selective activation of unreactive C-H bonds using a ligand-directed approach is one of the most popular synthetic protocols for obtaining organometallic compounds. Palladium cyclometallated compounds or palladacycles are common catalysts in cross-coupling reactions and proposed intermediates in metal-catalyzed C-H bond functionalization. In recent years, the strong effect of acidic additives on the pre-activation step of trimeric palladium acetate, [Pd(OAc)2]3, in C-H bond activation and functionalization was reported. While the synthesis of palladacycles and the mechanism of these reactions are well established in solution, the solid-state approach is still being investigated. In contrast to the reactions carried out in the solution, which are often time-consuming and performed in harmful solvents, the mechanochemical protocols can significantly shorten the reaction times and lead to the almost total omission of solvents. In this work, we present a simple, fast, and environmentally-friendly mechanochemical procedure for the synthesis of a series of dimeric dicyclopalladated azobenzenes promoted by selected organic acids. Reaction monitoring using in situ Raman spectroscopy enabled insight into the reaction dynamics while NMR and IR spectroscopy were used for characterization of dicyclopalladated products. Solid-state Suzuki- Miyaura reaction of 4-bromoazobenzene and phenylboronic acid was used as a model reaction for testing the catalytic potential of the obtained palladacycles.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA