AUTHOR=Sayahi Mohammad Hosein , Toosibashi Mansoureh , Bahmaei Mehdi , Lijan Hosein , Ma'Mani Leila , Mahdavi Mohammad , Bahadorikhalili Saeed 

TITLE=Pd@Py2PZ@MSN as a Novel and Efficient Catalyst for C–C Bond Formation Reactions

JOURNAL=Frontiers in Chemistry

VOLUME=Volume 10 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2022.838294

DOI=10.3389/fchem.2022.838294

ISSN=2296-2646

ABSTRACT=In this paper, a novel catalyst is introduced based on the immobilization of palladium onto dipyrido[3,2-a:2',3'-c]phenazine modified mesoporous silica nanoparticles. Dipyrido[3,2-a:2',3'-c]phenazine (Py2PZ) ligand is synthesized in a simple method from the reaction of 1,10-phenanthroline-5,6-dione and 3,4-diaminobenzoic acid as starting materials. The ligand is used to functionalize mesoporous silica nanoparticles (MSN) and to modify their surface chemistry for the immobilization of palladium. The palladium immobilized dipyrido[3,2-a:2',3'-c]phenazine modified mesoporous silica nanoparticles (Pd@Py2PZ@MSN) are synthesized and characterized by several characterization techniques, including TEM, SEM, FTIR, TGA, ICP, XRD, and EDS analysis. After the careful characterization of Pd@Py2PZ@MSN, the activity and efficiency of this catalyst is examined in carbon-carbon bond formation reactions. The results are advantageous in water and the products are obtained in high isolated yields. In addition, the catalyst shows very good reusability and did not show significant loss inactivity after 10 sequential runs.