Figure - available from: RSC Advances
This content is subject to copyright. Terms and conditions apply.
Source publication
In the past few decades, cross-coupling of aryl halides and arylboronic acids in the presence of carbon monoxide (CO), also called carbonylative Suzuki coupling, to form two new carbon–carbon bonds in the production of synthetically and biologically important biaryl ketones, has been widely studied. Consequently, various catalytic systems have been...
Similar publications
Herein, we present a practical, more efficient, environmentally friendly method for the synthesis of 1,5-benzodiazepine via condensation of benzene-1,2-diamine with commercially available ketones. The reaction was performed using various heterogeneous clay based catalysts, including Montmorillonite-K10, Montmorillonite-KSF, Kaoline, and bentonite,...
Citations
... The unique features of nanomaterials allow them to adsorb a diverse spectrum of pollutants, including heavy metals, organic chemicals, colours, and new toxins (Naseem & Durrani, 2021). Because of their tiny size and wide surface area, nanocatalysts are more reactive, enabling quicker and more efficient catalytic reactions (Söğütlü et al., 2021). Nanomaterials' surface characteristics may be tailored to have particular catalytic activity, allowing them to selectively breakdown some contaminants while sparing others (Rasmussen et al., 2010). ...
Biotechnology is one of the emerging fields that can add new and better application in a wide range of sectors like health care, service sector, agriculture, and processing industry to name some. This book will provide an excellent opportunity to focus on recent developments in the frontier areas of Biotechnology and establish new collaborations in these areas. The book will highlight multidisciplinary perspectives to interested biotechnologists, microbiologists, pharmaceutical experts, bioprocess engineers, agronomists, medical professionals, sustainability researchers and academicians. This technical publication will provide a platform for potential knowledge exhibition on recent trends, theories and practices in the field of Biotechnology
... Suzuki cross-coupling has attracted the greatest attention because of readily accessible, nontoxic, and stable aryl boronic acids and aryl halides. 17 Diaryl sulfides are a common component of natural products and are frequently utilized as crucial building blocks in organic transformations since they are biologically active compounds. 18−20 So far, various methods have been reported for the synthesis of diaryl sulfides. ...
Silver-based catalysts are valuable catalysts in various areas of the chemical industry, organic syntheses, and transformations, and from a chemical and industrial point of view, their recycling is very important. Herein, silver natural asphalt sulfonate (NA-SO3Ag) was fabricated via the grafting of Ag(I) on the surface of the solid natural asphalt sulfonate as a novel and efficient recoverable sliver nanocatalyst. Natural asphalt is one of the hydrocarbons that are found in mineral veins. The structure of NA-SO3Ag was characterized by diverse microscopic and spectroscopic techniques including Fourier-transform infrared (FTIR), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), thermogravimetric analysis (TGA), Brunauer–Emmett–Teller (BET), X-ray diffraction (XRD), and inductively coupled plasma optical emission spectroscopy (ICP-OES) techniques. The NA-SO3Ag nanocatalyst was utilized for C–Se and C–S bond formation via coupling reactions of aryl halides and organic disulfides/diselenides to afford a wide variety of diaryl sulfides/selenides in good to excellent yields. Additionally, the utilization of NA-SO3Ag in C–C bond formation was examined in Suzuki coupling reactions successfully. For at least 6 trials, this heterogeneous catalyst can be separated and reused without any activity reduction.
... Nanocomposites are biphasic nanosized particles that are composed of by a combination of more than one material. After its synthesis nanocomposites show superior "averaged" properties between the two constituting phases, the continuous (matrix) and the discontinuous (reinforcing material) and have found tremendous applications in modern day catalysis [19] . ...
Spherically shaped bimetallic Ni/Ag nanocomposite is synthesized in one-pot within colloidal silica cavities in aqueous media in an efficient way and is characterized using UV-Vis, IR, EPR, Raman, powder XRD, SEM, TEM, and SERS. This could trigger the chemoselective NaBH4 reduction of nitoarenes under solvent free conditions at ambient temperature in excellent yields. The process could be scaled up to multi-gram scale without any need for temperature control and organic extractor. This spherical nanocomposite showed good operational stability, robustness and recyclability as is evidenced by a model reaction of 2-nitophenol (2-NP) to 2-aminophenol (2-AP). Reduction of nitroarenes is widely used for the studies of catalytic efficacy of nanoparticles as its mechanism is still unproven in heterogenous condition. Although complicated, a real time monitoring of surface-enhanced Raman scattering (SERS) with discrete steps, by placing the surface-immobilized reactant molecules at the well-defined spherical nanocomposite, we identified dihydroxyazobenzene (DHAB) as the intermediate. The catalysing process was further studied computationally using DFTB level of theory through Nudged elastic band (NEB) method to locate the involved transition states and intermediates. Overall, the results demonstrate that spherical Ni/[email protected] bimetallic nanocomposite could catalyse the selective activation of NaBH4 reduction of nitoarenes in a fast, clean process and SERS as a powerful tool for studying heterogeneous catalysis and hence, the present catalyst system constitutes one straightforward and environmentally safe approach to a class of much sought organic transformation.
... Recently, Hajra et al. reported the past decades developments in Suzuki-Miyaura carbonylative coupling reactions using modern methods based on transition-metal catalysts with special emphasis to Pd. 152 Also, Vessally and coworkers reviewed recent progress in the application of NPs for this type of couplings. 153 Among different systems, the immobilization of Pd species on inorganic nanoparticles present interesting catalytic activities for the studied reaction. Thus, different works reported the preparation of functionalized nano-objects to stabilize Pd(II)-complexes or PdNPs. ...
Metal-based nanoparticles (MNPs) have been widely used as catalysts in different types of chemical transformations, taking advantage of their intrinsic properties, such as geometry, specific surface area, sites (edges, corners, faces, kinks, steps…) and electronic configuration, which offer a wide-ranging variety of interactions with the reagents and products of catalytic processes. In addition, both the nature of the metal and the support (often MNPs are supported on solids or immobilized in liquid phases) play a crucial role in their catalytic behavior and plausible recycling. Nevertheless, research works reporting on the organometallic interactions at the metal surface are much more limited, often due to the difficulty of accessing to convenient experimental techniques. In this contribution, an overview from an organometallic point of view is presented regarding the interactions of organic compounds (reactants or products) at the surface of metal nanoparticles based on experimental data and calculations, helping to establish structure-reactivity correlations.
... 112 The preparation of highly active catalytic materials with enhanced reusability properties has also been enabled by the immobilization of PdNPs on solids supports such as silicates (mesoporous SiO2, 113,114 mercaptopropyltrimethoxysilane-SiO2, 115 PEG-SiO2, 116 152 Also, Vessally and coworkers reviewed recent progress in the application of NPs for carbonylative Suzuki coupling. 153 Among different systems, the immobilization of Pd species on inorganic nanoparticles present interesting catalytic activities for the studied reaction. Thus, different works reported the preparation of functionalized nano-objects to stabilize Pd(II)complexes or PdNPs. ...
The double decarboxylative coupling reaction between two (similar or different) molecules of carboxylic acids is an emerging area that has gained considerable attention as a new avenue for forging carbon–carbon bonds. Since this synthetic strategy only utilizes carboxylic acids as easily accessible, non-toxic and stable starting materials, and extrudes carbon dioxide (CO2) as the only waste by-product, it can be considered as an environmentally benign alternative to traditional coupling reactions which mainly rely on the use of toxic organic halides or organometallic reagents. The aim of this review is to highlight the recent advances and developments in this exciting new field that may serve as inspiration for future research to mature it.
Bimetallic catalysts frequently exhibit synergistic performance as compared to their monometallic constituents but will undergo adsorbate-induced surface segregation and reconstruction upon exposure to reaction conditions. Although such phenomena have been...
