SO₃H‐functionalized nano‐MGO‐D‐NH₂: Synthesis, characterization and application for one‐pot synthesis of pyrano[2,3‐d]pyrimidinone and tetrahydrobenzo[b]pyran derivatives in aqueous media

Abstract

An SO3H‐functionalized nano‐MGO‐D‐NH2 catalyst has been prepared by multi‐functionalization of a magnetic graphene oxide (GO) nanohybrid and evaluated in the synthesis of tetrahydrobenzo[b]pyran and pyrano[2,3‐d]pyrimidinone derivatives. The GO/Fe3O4 (MGO) hybrid was prepared via an improved Hummers method followed by the covalent attachment of 1,4‐butanesultone with the amino group of the as‐prepared polyamidoamine‐functionalized MGO (MGO‐D‐NH2) to give double‐functionalized magnetic nanoparticles as the catalyst. The prepared nanoparticles were characterized to confirm their synthesis and to precisely determine their physicochemical properties. In summary, the prepared catalyst showed marked recyclability and catalytic performance in terms of reaction time and yield of products. The results of this study are hoped to aid the development of a new class of heterogeneous catalysts to show high performance and as excellent candidates for industrial applications.

Synthesis and characterization of nanocrystalline hydroxyapatite and its catalytic behavior towards synthesis of 3,4‐disubstituted isoxazole‐5(4H)‐ones in water

“…In continuation of our previous researches on the design and application of heterogeneous and reusable solid catalysts in organic synthesis and MCRs, [55][56][57][58][59][60][61][62][63][64][65][66][67][68][69][70][71] here we report an efficient and green method for the synthesis of 3,4-disubstituted isoxazole-5(4H)-ones catalyzed by HAp nanoparticles (Scheme 1).…”

Pd(0)‐guanidine@MCM‐41: a very effective catalyst for rapid production of bis (pyrazolyl)methanes

“…[1][2][3][4][5][6][7] Its central aim is the control of chemical reactions by changing the size, dimensionality, chemical composition and morphology of the reaction center, and by changing the kinetics using nanopatterning of the reaction centers. [8][9][10][11][12] Nanoparticles can substitute conventional materials, and serve as active and stable heterogeneous catalysts or as support materials for various catalytic groups. [13][14][15][16][17][18] Due to their small sizes, catalytic-active nanoparticles have higher surface areas and increased exposed active sites, and thereby improved contact areas with reactants, akin to those of homogeneous catalytic systems.…”

Facile One‐pot Synthesis of Arylsulfonyl‐4H‐pyrans Catalyzed by Ru Loaded Fluorapatite

“…In recent years, heterogeneous catalysts have received ample attention because of their distinctive possessions such as, huge and responsive surface areas, recyclability, stability, higher selectivity, simple separation and environmentally benign nature . Due to green principles and high efficiency, heterogeneous catalysts have been widely used in various procedures of organic transformations and heterocyclic synthesis .…”

“…In recent years, heterogeneous catalysts have received ample attention because of their distinctive possessions such as, huge and responsive surface areas, recyclability, stability, higher selectivity, simple separation and environmentally benign nature. [9][10][11][12][13][14][15] Due to green principles and high efficiency, heterogeneous catalysts have been widely used in various procedures of organic transformations and heterocyclic synthesis. [16][17][18][19][20] Fluorapatites [FAp, Ca 10 (PO 4 ) 6 F 2 ] are time-hon-oured catalyst materials for various chemical applications, because of their acidic nature and unique biocompatibility.…”