A supported palladium Schiff-base complex on SBA-15 as a reusable supported catalyst in the Heck coupling reaction
Amin Darabi, Mohsen Nikoorazm, Bahman Tahmasbi
TL;DR
A new reusable palladium-based catalyst was created using a modified SBA-15 structure for efficient carbon-carbon coupling reactions.
Contribution
A novel supported palladium Schiff-base complex on SBA-15 is developed for reusable catalysis in Heck reactions.
Findings
The catalyst achieved excellent yields in Heck coupling reactions with various aryl halides and olefins.
The catalyst can be easily isolated and reused multiple times, supporting green chemistry principles.
Abstract
In this study, the mesoporous structure of SBA-15 was synthesized using a very simple procedure, and its surface was modified with 3-aminopropyltriethoxysilane (APTES). Next (3,4-bis(-(2-hydroxybenzylidene)amino)phenyl)(phenyl)methanone (bis(HBAPPM)) was obtained by condensation of salicylaldehyde (SA) and 1,2-diaminobenzophenone (diABP) in methanol (MeOH), then bis(HBAPPM) was immobilized on the modified mesoporous structure of SBA-15. Then, a palladium Schiff-base complex was supported on the functionalized SBA-15, and the final product was denoted as SBA-15@bis(HBAPPM)-Pd catalyst. The synthesized catalyst was characterized by EDX, XRD, SEM, WDX, TGA, ICP, FT-IR, and BET techniques. The catalytic application of SBA-15@bis(HBAPPM)-Pd was investigated as a heterogeneous catalyst in Heck C–C coupling reactions using various aryl halides and olefins. The result was the achievement of the…
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Taxonomy
TopicsMesoporous Materials and Catalysis · Catalytic Cross-Coupling Reactions · Zeolite Catalysis and Synthesis