Magnetite (Fe 3 O 4 ) nanoparticles-supported dodecylbenzenesulfonic acid as a highly efficient and green heterogeneous
- PDF / 1,620,339 Bytes
- 12 Pages / 595.276 x 790.866 pts Page_size
- 40 Downloads / 210 Views
ORIGINAL PAPER
Magnetite (Fe3O4) nanoparticles‑supported dodecylbenzenesulfonic acid as a highly efficient and green heterogeneous catalyst for the synthesis of substituted quinolines and 1‑amidoalkyl‑2‑naphthol derivatives Deepak Katheriya1 · Nipun Patel1 · Harsh Dadhania2 · Abhishek Dadhania1 Received: 14 June 2020 / Accepted: 18 September 2020 © Iranian Chemical Society 2020
Abstract Magnetically retrievable, magnetite (Fe3O4) nanoparticles-supported dodecylbenzenesulfonic acid (DDBSA@MNP) was synthesized and characterized through different analytical techniques such as TEM, XRD, FTIR, TGA, SEM, EDX and VSM. The catalytic efficiency of synthesized DDBSA@MNP was evaluated for the synthesis of substituted quinolines and 1-amidoalkyl-2-naphthols through one-pot condensation. The methodology provides a facile approach for the synthesis of targeted compounds with excellent isolated yields. Additionally, the catalyst can be recovered through external magnet and reused up to five reaction cycles with prominent reactivity. The present approach offers many advantages such as green and mild reaction condition, facile catalyst recovery and excellent isolated yield of final products. Graphic abstract
Keywords Magnetic nanoparticles · Heterogeneous catalyst · One-pot condensation · Friedlander reaction
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s13738-020-02069-9) contains supplementary material, which is available to authorized users. * Abhishek Dadhania [email protected] 1
Department of Chemical Sciences, P. D. Patel Institute of Applied Sciences, Charotar University of Science and Technology (CHARUSAT), Changa, Gujarat 388421, India
Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar 388120, Gujarat, India
2
Introduction Homogeneous catalysts have been known for several years due to their distinct features such as high activity and selectivity [1–3]. Homogeneous nature of the catalyst renders all catalytic sites available for the reactants and also provides the stereo- and regioselectivity to the reaction [4]. However, homogeneous catalysts contribute not more than 15% of the industrial processes as compared to its counterpart heterogeneous catalysts [5]. The reason behind this trend is difficulties associated with their separation and reusability.
13
Vol.:(0123456789)
Separation of trace amount of catalysts from final product is very much important, especially in highly regulated pharmaceutical sector [6]. Likewise, reusability is directly related to sustainability of the process and has a huge impact on product cost and pollution. Even after utilization of different experimental techniques such as extraction, distillation and chromatography, the catalyst separation remains a huge challenge [7]. An ideal solution for this problem is heterogenization of homogeneous catalyst through its immobilization on solid supports such as polymer, silica, carbon and some metal oxides [8–12]. However, heterogenization usual
Data Loading...
