Palladium catalyst immobilized on functionalized microporous organic polymers for C-C coupling reactions

Area of Science:

• Materials Science
• Organic Chemistry
• Catalysis

Background:

• Heterogeneous catalysts are crucial for efficient chemical synthesis.
• Developing stable and reusable catalysts with high surface area is an ongoing challenge.
• Palladium (Pd) catalysts are widely used for carbon-carbon coupling reactions.

Purpose of the Study:

• To synthesize and characterize novel microporous organic polymer-immobilized palladium (MOP-Pd) catalysts.
• To evaluate the catalytic activity of MOP-Pd in carbon-carbon coupling reactions.
• To assess the stability and reusability of the MOP-Pd catalysts.

Main Methods:

• Synthesis of MOP-Pd catalysts via Scholl coupling and Friedel-Crafts reactions.
• Characterization using FT-IR, TGA, N2 sorption, SEM, TEM, ICP-AES, and XPS.
• Testing catalytic performance in Heck and Suzuki-Miyaura reactions.

Main Results:

• MOP-Pd catalysts exhibited high specific surface areas and large pore volumes.
• The catalysts demonstrated excellent activity and good to high yields in C-C coupling reactions.
• The MOP-Pd catalyst was successfully recovered and reused five times with minimal activity loss.

Conclusions:

• MOP-Pd catalysts are effective, stable, and reusable heterogeneous catalysts for C-C coupling.
• The synthesis method offers readily available raw materials and low cost.
• These catalysts present a promising alternative for sustainable chemical synthesis.