A highly crosslinked, mesoporous poly(ionic liquid) containing salen–Pd for efficient, eco-friendly Suzuki–Miyaura coupling reactions

Abstract

Pd-catalyzed Suzuki-Miyaura cross-coupling reactions have attracted considerable attention. Porous organic polymers (POPs) are potential heterogeneous catalysts to overcome the shortcomings of homogeneous reaction. However, most POPs are microporous, which strongly...

Poly(ionic liquid)s: an emerging platform for green chemistry

“…This SMPIL-Pd could act as a heterogeneous recyclable catalyst for efficient Suzuki-Miyaura coupling reactions. 141 Many PILs are temperature-responsive materials, and phase transformation may occur when changing temperature. Accordingly, Li et al designed a PIL containing two different anions, Cl − , and [NTf 2 ] − , facilitating the preparation of Ru-Pd catalysts with controllable phase transition temperatures and hydrophilic and hydrophobic surfaces.…”

“…This SMPIL-Pd could act as a heterogeneous recyclable catalyst for efficient Suzuki–Miyaura coupling reactions. 141…”

Synthesis of a bilayered SDS/ionic liquid stabilized ferrofluid and magnetic cubic mesoporous silica using a long chain ionic liquid

“…Recently, the application of ionic liquids has opened a new route in the fields of synthesis and creation of new and interesting materials. 8–10 Particularly, long-chain ionic liquids with imidazolium head groups and long alkyl chains (more than 10 carbon atoms) can show both the surface activity of common surfactants and the special properties of the short-chain ionic liquids such as the properties of low melting temperature, strong solubility, increasing polarity in water, and so on. Numerous studies were performed on the self-organization properties of long-chain ionic liquids in aqueous solutions.…”

New sustainable and robust catalytic supports for palladium nanoparticles generated from chitosan/cellulose film and corn stem biochar

“…Typical catalytic systems for cross-coupling reactions employ a metallic catalyst (Pd normally), auxiliary ligand to stabilize the metal, Lewis base to neutralize the system, solvent, inert atmosphere, and heating (Diederich and Meijere 2004 ; Negishi 2002 ). Efforts have been reported in order to reduce the amount of catalytically active species in reactions (Roy and Uozumi 2018 ) or replace it with a more eco-friendly and less expensive metal (Ma et al 2021 ); reduce the use of auxiliary ligands (Serrano et al 2022 ); employ less toxic solvents (Su et al 2022 ) and bases (Long et al 2019 ); and make the reaction conditions milder through the use of lower temperatures (close to room temperature) (Ma et al 2022 ), microwave heating (Salih 2022 ), sonication (Wilson et al 2018 ), or elimination of the inert atmosphere (Tian et al 2022 ). In addition, the search for new, greener catalytic systems employing biomass sources appears frequently in literature, such as in the use of biomass extracts to prepare metal nanoparticles (NPs) via biogenic routes (Schmitt et al 2021 ) or green solvents applied in carbon–carbon and carbon–heteroatom couplings (Peixoto et al 2022 ).…”