C–C coupling reactions using a gold(iii) phosphorus complex confined within metal–organic framework fibers in aqueous solution

Abstract

HPG@KCC-1/PPh2/Au NPs were used for the first time as a catalyst for the C–C cross-coupling between allylarenes or methyl acrylate and benzoxazole, and they showed excellent catalytic activities under green conditions.

Role of the Support in Gold-Containing Nanoparticles as Heterogeneous Catalysts

“…327 Sadeghzadeh et al used a MOF-like mesoporous silica KCC-1, with phosphine linkers, to stabilize Au(III) complexes; arylation of benzoxazole with allylarene gave an 87% yield in 7 h. Similar activity was noted for a Au(III) homogeneous catalyst, although the separability of the supported catalyst makes the heterogeneous form beneficial. 328 Mesoporous silica has also been used when coupled with additional materials: Movahed et al used graphene coated with mesoporous silica, with pores of ∼2.5 nm, to support small Au NPs. The Au NPs were ∼2 nm in size and predominantly Au(0) according to XPS analysis.…”

“…Liu et al supported AuCl on MCM-41, a hierarchical silica, identifying Au­(I) active sites for oxidative cross-coupling of propargylic acetates and arylboronic acids, noting reasonable yields (71%) in only 15 min, with recyclability over seven cycles but with slower kinetics being observed after three reaction cycles . Sadeghzadeh et al used a MOF-like mesoporous silica KCC-1, with phosphine linkers, to stabilize Au­(III) complexes; arylation of benzoxazole with allylarene gave an 87% yield in 7 h. Similar activity was noted for a Au­(III) homogeneous catalyst, although the separability of the supported catalyst makes the heterogeneous form beneficial . Mesoporous silica has also been used when coupled with additional materials: Movahed et al used graphene coated with mesoporous silica, with pores of ∼2.5 nm, to support small Au NPs.…”

Halide-bridged tetranuclear organocopper(i) clusters supported by indolyl-based NCN pincer ligands and their catalytic activities towards the hydrophosphination of alkenes

“…Metal-catalyzed hydrophosphination of alkenes represents the most straightforward and atom-economical protocol for the synthesis of various organophosphorous compounds, which have played important roles in organic and materials chemistry. [68][69][70] With six clusters in hand, their catalytic activities for the hydrophosphination of alkenes were examined.…”

Gold nanoparticles embedded into imidazolium-functionalized porous aromatic frameworks as heterogenous nanoreactors for the hydrogenation of nitroaromatics

“…[25][26][27][28] Porous materials with abundant anchoring sites or appropriate pore size to reinforce metal-support interaction are developed as favourable support materials. [29][30][31][32][33][34][35][36][37][38][39][40] Among the numerous porous materials, porous aromatic frameworks (PAFs) featuring diverse synthesis strategies and high stabilities stand out. It is feasible to insert functional groups into PAFs' skeletons that will enhance the interaction between metal…”