The application of ionic liquid-based system in the extraction of palladium: synthesis, characterization and computer calculation of palladium complexes

Abstract

The extraction is less H+ dependent with less ionic liquid loss and palladium complex crystals can also be quickly prepared.

Copper-free Sonogashira cross-coupling reactions: an overview

“…These catalysts have recently been reported to efficiently promote this type of Sonogashira reaction due to likely inhibition of dearomative rearrangement step in the catalytic cycle. Similar reports of copper and amine-free Sonogashira reaction have also been reported to catalyze the synthesis of pyrazolo [5,1b] [1,3]oxazoles in water as well as arylation of phenylacetylene [89][90][91] or functionalization of quinoline scaffolds 88 with or without using ligands, respectively. In 2016, Karami et al employed a heterogeneous organic-inorganic hybrid catalyst as an efficient tool in this reaction.…”

“…A combination of PdCl 2 with N,N 0disubstituted-imidazole-2-thiones, affords a new catalytic system by which the conventional Sonogashira coupling reaction takes place under copper and phosphine-free conditions (Scheme 27). [88][89][90][91] Palladium nanoparticles could also be stabilized on aluminum hydroxide Al(OH) 3 as the support to introduce a new generation of catalysts in this eld. For example, Li et al employed an in situ prepared aluminum hydroxide-supported palladium nanocatalyst to catalyze a copper-free Sonogashira reaction of phenylacetylene with aryl halides, as depicted in Scheme 28.…”

Synthesis, characterization, photophysical properties, and catalytic activity of an SCS bis(N-heterocyclic thione) (SCS-NHT) Pd pincer complex

“…[57][58][59] The Pd-S distance is also in the same range as Pd-S distances in some thiolate complexes. The Pd-S distances and other geometric data in the square plane are similar to other Pd NHT complexes.…”

Liquid‐ and Solid‐based Separations Employing Ionic Liquids for the Recovery of Platinum Group Metals Typically Encountered in Catalytic Converters: A Review

“…While phosphate is not per se toxic, release of excessive amounts into aquatic environments can promote algal growth and lead to eutrophication. [245] Regarding NTf 2 À , which has been reported by many researchers referenced in this review, [142,143,145,[150][151][152]155,[157][158][159][160][161]163,184,[185][186][187][188][195][196][197] its ecotoxicological potential has been established. [246] The overwhelming majority of publications presented herein, reports the use of some organic solvent as a diluent for the IL.…”