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صفحه اصلی
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بیست و نهمین کنفرانس شیمی آلی ایران
Curcumine-copper functionalized magnetic graphene oxide as an efficient nanocatalyst for one-pot synthesis of polyhydroquinoline derivatives
نویسندگان :
Alireza Gharehkhani ( دانشگاه بوعلی سینا همدان ) , Maryam Hajjami ( دانشگاه بوعلی سینا همدان )
کلید واژه ها :
Curcumine،Magnetic graphene oxide،Polyhydroquinoline،Multicomponent reaction،Nanocatalyst.
چکیده مقاله :
Curcumine-copper functionalized magnetic graphene oxide as an efficient nanocatalyst for one-pot synthesis of polyhydroquinoline derivatives Alireza Gharehkhani, Maryam Hajjami* Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Postal code 6517838683, Hamedan, Iran. Email Address: alireza.gharehkhani110@gmail.com & m.hajjami@basu.ac.ir Recently, the design of efficient and recoverable catalysts has become an important in organic reactions [1]. When the size of the support is decreased to the nanometer scale, the surface area is increased. Therefore, nanocatalysts can be used to improve the catalytic behavior of heterogeneous catalysis [2]. Among carbon nanomaterials, graphene oxide (GO) has been considered for use as support materials due to its tensile strength, large surface area, thermal stability, ease of recyclability [3]. To modify the catalyst supports, there are copious selections of ligands that were typically synthesized in specific research studies. In the meantime, the use of naturally- derived ligands such as Curcumin extracted from natural resources has been taken into consideration. Curcumin, as a natural ligand, can be coordinated to metal ions [4]. In this light, herein, an efficient protocol has been developed for design of Cu-curcumin functionalized magnetic graphene oxide nanoparticles (GO@Fe3O4@SiO2@Cur–Cu) as nano catalyst for mild and green synthesis of polyhydroquinoline derivatives. The one-pot multicomponent reaction of aldehydes, ethylacetoacetate, ammonium acetate, and dimedone in the presence of GO@Fe3O4@SiO2@Cur–Cu was investigated at 100 °C in solvent-free condition. The synthesized nanocatalyst was characterized by FT-IR, TGA, XRD, EDX, VSM, ICP, TEM and SEM analyses. GO@Fe3O4@SiO2@Cur–Cu showed remarkable advantages in comparison with previous methods. Advantages of the method presented here include easy purification, reusability of the catalyst, green and mild procedure, and synthesis of new derivatives in high yields within short reaction time. KEYWORDS: Curcumine, Magnetic graphene oxide, Polyhydroquinoline, Multicomponent reaction, Nanocatalyst. References [1] S. Rashidi, F. Gholamian, M. Hajjami, J nanopart. res., 2023, 25, 102. [2] R. Ghafouri-Nejad, M. Hajjami, R. Nejat, Appl. Organomet. Chem., 2018, 32, e4248. [3] P. Moradi, M. Hajjami, RSC Adv., 2021, 11, 25867. [4] M. A. Jani, K. Bahrami, J. Exp. Nanosci.,2020, 15, 182.
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