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New N, N′ -substituted imidazolium salts and their corresponding diiodopyridinepalladium (II) complexes were successfully synthesized and supported on KCC-1 (KCC-1/Pd-NHC-Py) has been developed for synthesis of pyridopyrimidinones, providing excellent yields of the corresponding products with remarkable chemoselectivity. This morphology ultimately leads to higher catalytic activity for the KCC-1-supported nanoparticles. The KCC-1/Pd-NHC-Py NPs were thoroughly characterized by using TEM, FESEM, TGA, and BET. We supported a drug on the surface of a silica and used as a catalyst for synthesis another drug. [ABSTRACT FROM AUTHOR]

Fibrous nanosilica (KCC-1) as a catalyst support was investigated in terms of stability, recycling, and reusability. For the first time, CO2 transformation was performed via the synthesis and application of KCC-1 together with sodium tripolyphosphate (STPP) and 3-aminopropyltriethoxysilane (APTES) as its functionalized derivative. To this goal, KCC-1/STPP NPs were applied to act as a nanocatalyst with excellent catalytic activities under green reaction conditions. [ABSTRACT FROM AUTHOR]

Abstract: This study investigates the potential application of an efficient, easily recoverable and reusable KCC-1 nanoparticle-supported Salen/Ru(II) catalyst in the synthesis of 2-oxazolidinones from CO2, and propargylic amines. The KCC-1/Salen/Ru(II) NPs were thoroughly characterized by using TEM, SEM, TGA, FT-IR, ICP-MS, and BET. This observation was exploited in the direct and selective chemical fixation of CO2, affording high degrees of CO2 capture and conversion. The recycled catalyst has been analyzed by ICP-MS showing only minor changes in the morphology after the reaction, thus confirming the robustness of the catalyst.Graphical Abstract: [ABSTRACT FROM AUTHOR]

We have found that fibrous nanosilica (KCC‐1) can used as a excellent support for the synthesis of highly sparse nanoparticles and has high surface area that was functionalized with Tetrathia‐azacyclopentadecane (TTACP) groups acting as the strong performers so that the Ag nanoparticles were well‐dispersed without aggregation on the fibers of the KCC‐1 microspheres (KCC‐1/TTACP/Ag). We enthusiasm to report one‐pot synthesis of 3‐Acyloxylindolines for first time from N‐tosyl‐2‐vinylaniline, and benzoic acid in the presence of KCC‐1/TTACP/Ag as a catalyst. [ABSTRACT FROM AUTHOR]

We have found that fibrous nanosilica (KCC-1) can used as a excellent support for the synthesis of highly sparse nanoparticles. KCC-1 has high surface area that was functionalized with 1,3-bis(dimethylthiocarbamoyloxy)benzene groups acting as the strong performers so that the Pd (II) was complex without aggregation on the fibers of the KCC-1 microspheres (KCC-1/BTB/Pd). For synthesis of 3-sulfenylindoles from aryl iodide, indoles, and thiourea used from the KCC-1/BTB/Pd NPs as a catalyst that showed excellent catalytic activities under green conditions. Compared with the traditional substrate, KCC-1/BTB/Pd substantially increases protection and the accessibility of the nanoparticle sites due to its three dimensional hierarchical structure. [ABSTRACT FROM AUTHOR]

Novel heterogeneous catalyst systems comprised of a fibrous nanosilica-supported nano-Ni@Pd-based ionic liquid (KCC-1/IL/Ni@Pd) are described for the cyclization of propargylic amines with CO2 to provide 2-oxazolidinones. KCC-1 with high surface area was functionalized with IL acting as a robust anchor so that the nano-Ni@Pd was well dispersed on the fibres of the KCC-1 microspheres, without aggregation. Because of the amplification effect of IL, high loading capacities of the nanocatalysts were achieved. The reported synthesis includes several advantages like solvent-free conditions, operational simplicity, short reaction times, environmentally benign reaction conditions, cost effectiveness, high atom economy and excellent yields, making it a genuinely green protocol. [ABSTRACT FROM AUTHOR]

In this study, The HPG@KCC-1 NP was prepared through the ringopening polymerization of glycidol on the surface of KCC-1 to form HPG@KCC-1 and then HPG@KCC-1 NPs were functionalized using chlorodiphenylphosphine and phosphine-functionalized nanoparticles (HPG@KCC-1/PPh 2 ) as a recyclable phosphorus ligand was obtained. Also, gold (III) complex of HPG@KCC-1/PPh 2 ligand (HPG@KCC-1/PPh 2 /Au) was prepared which used for the cyclization of propargylic amines with CO 2 to provide 2-oxazolidinones. High catalytic activity and ease of recovery from the reaction mixture using filtration, and several reuse times without significant losses in performance are additional eco-friendly attributes of this catalytic system. [ABSTRACT FROM AUTHOR]

A novel gold(I)-containing ionic liquid-based KCC-1 catalyst was applied for the of propargylic amines with CO2 to provide 2-oxazolidinones. High and ease of recovery from the reaction mixture using an external magnet, and several recycle runs without significant loss in performance are additional eco-friendly attributes of this catalytic system. Copyright © 2016 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

In this study, a novel fibrous nano-silica (KCC-1) supported ionic liquid (KCC-1/IL) with high surface area and easy accessibility of active sites was successfully developed by a facile approach. The synthesized KCC-1/IL nanocatalyst exhibited excellent catalytic activity for the synthesis of quinazoline-2,4(1 H ,3 H )-diones from CO 2 and 2-aminobenzonitriles under mild conditions to the easy accessibility of the active sites. A high catalytic activity and ease of recovery from the reaction mixture by using filtration and several reuses without any significant loss in performance are additional eco-friendly attributes of this catalytic system. [ABSTRACT FROM AUTHOR]

• A new family of high surface area phosphosilicat nanosheet (FPS) with fibrous morphology was prepared. • [Ru(DMSO) 4 Cl 2 ] complex over triazole functionalized FPS. • FPS/Ligand/Ru was characterized and employed as photocatalytic for reduction of CO 2. • This system could be considered as perfect nanocatalyst by using the host–guest approach. In this work we report the design and synthesis of high-surface-area nanocatalysts by reaction between tripolyphosphate (TPP) and tetraethyl orthosilicate (TEOS) and then the complex ruthenium acetate anchored over the click modified ligand of fibrous phosphosilicate (FPS), forms a new highly efficient nano catalyst that shows excellent catalytic performance within CO 2 reduction to formate under visible-light irradiation. The FPS/Ligand/Ru nanocatalyst was thoroughly characterized by Fourier transform infrared spectra (FTIR), Powder X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Transmission electron microscopy (TEM), Energy dispersive X-ray spectroscopy (EDX), and N 2 adsorption/desorption study. [ABSTRACT FROM AUTHOR]

Abstract Inspired by the high accessibility and low diffusion limitations of fibrous silica nanoparticles (KCC‐1), fibrous phosphosilicate (FPS) was engineered using a microemulsion system. In this work, we report design and synthesis of high-surface-area FPS using tripolyphosphate (TPP) and tetraethyl orthosilicate (TEOS). The FPS nanocatalyst was thoroughly characterized by Fourier transform infrared spectra (FTIR), Powder X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Transmission electron microscopy (TEM), Energy dispersive X-ray spectroscopy (EDX), and N 2 adsorption/desorption study. Considering the large ionic internal character, high mechanical and thermal stability as well as long-term colloidal stability, this system could be considered as perfect nanocatalyst by using the host–guest approach. Then palladium nanoparticles (Pd NPs) supported on fibrous phosphosilicat to the cycloaddition of CO 2 to epoxides. Graphical abstract Image 1 Highlights • A new family of high surface area phosphosilicat nanosheet (FPS) with fibrous morphology was prepared. • Palladium nanoparticles (Pd NPs) supported on fibrous phosphosilicat. • FPS was characterized and employed as nanocatalyst to the cycloaddition of CO 2 to epoxides. • This system could be considered as perfect nanocatalyst by using the host–guest approach. [ABSTRACT FROM AUTHOR]

This study investigated the potential application of an efficient, easily recoverable, and reusable copper(II)-based catalyst bearing polyvinyl alcohol (PVA) immobilized on FeNi3/KCC-1/APTPOSS [FeNi3/KCC-1/APTPOSS/TCT/PVA/Cu(II)] magnetic nano-particles (MNPs) for the N-formylation of amines via CO2 hydrogenation. FeNi3/KCC-1/TCT/PVA/Cu(II) MNPs were thoroughly characterized by transmission electron microscopy, field emission-scanning electron microscopy, vibrating sample magnetometry, thermo-gravimetric analysis, inductively coupled plasma-mass spectrometry (ICP-MS), and the Brunauer, Emmett, and Teller method. After the reaction, only minor changes to the morphology of the catalyst recycled by the ICP-MS were evidenced, thus corroborating its robustness.Graphical Abstract: [ABSTRACT FROM AUTHOR]

KCC‐1/IL/Pd NPs can used as an excellent support for the synthesis of highly sparse homogeneous catalyst. KCC‐1 has high surface area that was functionalized with ionic liquid phase acting as the strong performers so that the Pd catalyst was well‐dispersed without aggregation on the framework of the KCC‐1/IL. This nano catalyst was specified by TGA, XRD, TEM, SEM, FT‐IR, and ICP. For reduction of 2‐nitroaniline and 4‐nitrophenol used from the KCC‐1/IL/Pd NPs as a green catalyst that showed excellent catalytic activities. Compared with the traditional substrate, KCC‐1 substantially increases protection and the accessibility of the nanoparticle sites due to its three dimensional hierarchical structure. [ABSTRACT FROM AUTHOR]

The potential application of an efficient, easily recoverable and reusable magnetically separable FeNi3/KCC‐1/APTPOSS nanoparticle‐supported Cu(II) cyclam and salen complex catalyst for the synthesis of tetramethylquinoline‐2,4‐diamine was investigated. The FeNi3/KCC‐1/APTPOSS/Cyclam@Salen/Cu(II) magnetic nanoparticles were thoroughly characterized using various techniques. This catalyst was utilized in the direct and selective chemical reaction of 1,3‐dichlorovinamidinium⋅PF6 with aniline for the synthesis of tetramethylquinoline‐2,4‐diamine. The recycled catalyst was analysed using inductively coupled plasma mass spectrometry, which showed only minor changes in the morphology after the reaction, thus confirming the robustness of the catalyst. The potential application of an efficient, easily recoverable and reusable magnetically separable FeNi3/KCC‐1/APTPOSS nanoparticle‐supported Cu(II) cyclam and salen complex catalyst for the synthesis of tetramethylquinoline‐2,4‐diamine was investigated. The catalyst was thoroughly characterized. The catalyst was utilized in the direct and selective chemical reaction of 1,3‐dichlorovinamidinium⋅PF6 with aniline for the synthesis of tetramethylquinoline‐2,4‐diamine. The recycled catalyst was analysed, the results showing only minor changes in the morphology after the reaction, thus confirming the robustness of the catalyst. [ABSTRACT FROM AUTHOR]