Palladium Schiff base complex-modified Cu(BDC-NH₂) metal-organic frameworks for C-N coupling

Area of Science:

• Materials Science
• Catalysis
• Organic Chemistry

Background:

• Metal-organic frameworks (MOFs) offer tunable properties for catalytic applications.
• Post-synthetic modification allows for the development of advanced functional materials.
• C-N coupling reactions are crucial in synthesizing pharmaceuticals and organic materials.

Purpose of the Study:

• To synthesize a novel functionalized MOF catalyst, [Cu(BDC-NH2]@Schiff-base-Pd(ii)], via post-synthetic modification.
• To evaluate the catalytic performance of the synthesized MOF in C-N coupling reactions.
• To investigate the factors contributing to the catalyst's high efficiency and selectivity.

Main Methods:

• Post-synthetic modification of Cu(BDC-NH2) using Schiff base chemistry and Pd(ii) complexation.
• Characterization of the synthesized catalyst using techniques such as N2 isotherms, EDX, FT-IR, XRD, SEM, ICP-OES, and TG-DTA.
• Application of the catalyst in various C-N cross-coupling reactions with diverse functional groups.

Main Results:

• The synthesized [Cu(BDC-NH2]@Schiff-base-Pd(ii)] catalyst demonstrated high efficiency in C-N coupling reactions.
• The catalyst exhibited excellent selectivity, high product conversion, and good yields.
• The catalyst facilitated rapid reactions, achieving maximum product efficiency in minimal time.
• Convenient separation of the catalyst from the reaction products was achieved.

Conclusions:

• The novel [Cu(BDC-NH2]@Schiff-base-Pd(ii)] MOF catalyst is highly effective for C-N coupling reactions.
• The catalyst's performance is attributed to its high surface area and synergistic effects between Cu nodes and Pd ions.
• This catalyst offers advantages in terms of efficiency, selectivity, and ease of separation, making it a promising candidate for organic synthesis.