S‐Benzylisothiourea complex of palladium on magnetic nanoparticles: A highly efficient and reusable nanocatalyst for synthesis of polyhydroquinolines and Suzuki reaction

Abstract

S‐Benzylisothiourea complex of palladium supported on modified Fe3O4 magnetic nanoparticles (Pd‐SBTU@Fe3O4) is reported for carbon–carbon coupling through the Suzuki coupling reaction. Also, the synthesis of polyhydroquinoline derivatives is reported in the presence of Pd‐SBTU@Fe3O4 as nanocatalyst. The prepared nanoparticles were characterized using Fourier transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, vibrating sample magnetometry and inductively coupled plasma atomic emission spectroscopy. The nanocatalyst was easily recovered using an external magnet and reused several times without significant loss of its catalytic efficiency. The heterogeneity of Pd‐SBTU@Fe3O4 was studied using hot filtration.

Copper‐based Schiff Base Complex Immobilized on Core‐shell Fe3O4@SiO2 as a magnetically recyclable and highly efficient nanocatalyst for green synthesis of 2‐amino‐4H‐chromene derivatives

“…[14,15] Magnetic Fe 3 O 4 nanoparticles have emerged as a privileged support for immobilization of various ligands and functional groups such as phosphorous, nitrogen and organic moieties owing to the presence of high density hydroxyl groups on their surface, high surface area, high stability, facile magnetic separation, environmental benignity and high loading capacity. [13,[16][17][18][19][20][21][22][23][24][25] Among different nitrogen-based ligands, Schiff-Base ligands supported on magnetic nanoparticles immobilize in excellent state through the coordination to a variety of transition metals with improved catalytic activity and stability. [26][27][28][29][30][31] This is because the ligands containing N-donors exhibit a high performance by a stable hosting a range of metal cations and as a result, these materials become excellent candidates in catalysis design as well as analytical, industrial and medicinal applications.…”

Immobilized Cu(II) Schiff base complex supported on Fe3O4 magnetic nanoparticles: A highly efficient and reusable new catalyst for the synthesis of pyranopyridine derivatives

“…[8][9][10][11] As a result, functionalized MNPs are of special interest for their application in various industrial and research fields and are good candidates for removal of heavy metal ions from wastewater. [13][14][15][16] Schiff bases, named after Hugo Schiff, are versatile compounds synthesized from condensation of amino compounds with carbonyl compounds. [13][14][15][16] Schiff bases, named after Hugo Schiff, are versatile compounds synthesized from condensation of amino compounds with carbonyl compounds.…”

Application of [Fe3O4@SiO2@(CH2)3Py]HSO4− as heterogeneous and recyclable nanocatalyst for synthesis of polyhydroquinoline derivatives

“…Sami Sajjadifar https://orcid.org/0000-0001-8661-1264 [41] 2 GSA@MNPs 240 90 [42] 3 C u -SPATB/Fe 3 O 4 150 89 [17] 4 F e 3 O 4 -SA-PPCA 120 97 [43] 5 Cu (II)/L-His@Fe 3 O 4 95 92 [44] 6…”