Step‐by‐step synthesis of copper(I) complex supported on platinum nanoparticle‐decorated mesoporous silica hollow spheres and its remarkable catalytic performance in Sonogashira coupling reaction

Abstract

In this study, a step‐by‐step method for the synthesis of platinum nanoparticles and copper(I) complex supported on mesoporous silica hollow spheres (Pt‐MSHSs‐Cu) is introduced. Scanning electron microscopy, transmission electron microscopy, powder X‐ray diffraction, Fourier transform infrared spectroscopy, nitrogen adsorption–desorption, energy‐dispersive X‐ray spectrometry, X‐ray photoelectron spectroscopy, and elemental and thermogravimetric analyses were applied for characterization of the surface, structure, size, phase composition, and morphology of the synthesized materials. The characterized material, Pt‐MSHSs‐Cu, was used as an efficient and heterogeneous catalyst in the Sonogashira coupling reaction under different reaction conditions. In comparison with MSHSs, Cu(I)‐functionalized MSHSs (MSHSs‐Cu), and Pt‐MSHSs samples, the Pt‐MSHSs‐Cu catalyst exhibited significantly increased catalytic performance with 91.50% yield. Therefore, the results obtained suggested a synergistic effect derived from platinum nanoparticles, MSHSs substrate, and copper(I) complex, which enhanced the rate of the Sonogashira coupling reaction.

A novel, efficient and magnetically recyclable Cu–Ni bimetallic alloy nanoparticle as a highly active bifunctional catalyst for Pd-free Sonogashira and C–N cross-coupling reactions: a combined theoretical and experimental study

“…Therefore, this perspective highlights an alternative pattern for the use of bimetallic catalysts in coupling reactions. 39–42…”

“…Therefore, this perspective highlights an alternative pattern for the use of bimetallic catalysts in coupling reactions. [39][40][41][42] Cu-based catalysts have become a tremendous interest, because of their abundant reserves, low costs and considerably high catalytic activity for carbon-carbon bond formation. 43 Anyway, the presence of a second metal such as nickel due to the synergistic effect between two metals can effectively enhance performance of the catalyst.…”

Magnetically modified Schiff base‐Pd complex: An efficient heterogeneous catalyst for Suzuki–Miyaura cross‐coupling and dyes degradation reaction

“…The MNP-AF-Pd catalyst showed higher catalytic activity. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] Some of the catalyst's key benefits are the use of a green solvent, moderate reaction conditions, a short reaction time, reusability for other reactions, and its ease of recovery from the reaction mixture.…”

“…[7][8][9][10] The suitability of support with the metal complexes and the solvents is also a crucial component of the catalytic method because it affects the recyclability, activity, and stability of supported metallic catalysts. [10][11][12] Notable, iron oxide nanoparticles have shown good support for metal catalysts because of high surface to volume ratio, which can offer a lot of active sites to encourage catalytic reaction. [1,13,14] These iron oxide anchored transition metal complexes of palladium can be used to create environmentally benign and reliable heterogeneous catalysts for Hiyama, Stille, Sonogashira, Suzuki, and Heck coupling reactions.…”

An expeditious synthesis and histo–toxicological study of 1,2,3‐triazoles catalyzed by a novel Fe3O4@SiO2‐Pr‐Thiosemicarbazide‐Cu(II) as a magnetically separable catalyst

“…[21][22][23] To circumvent such obstacles, the design and synthesis of a potential heterogeneous copper catalyst are highly warranted for easy separation from the final product and reuse for subsequent runs. 5,[21][22][23][24][25][26] Both inorganic and organic solid supports such as zeolite, 27 mesoporous silica, 28 cellulose, 29 chitosan, 30 etc. have been used to immobilize copper ions.…”