Green synthesis of Ni‐Cu‐Zn ferrite nanoparticles using tragacanth gum and their use as an efficient catalyst for the synthesis of polyhydroquinoline derivatives

Abstract

Ni 0.35 Cu 0.25 Zn 0.4 Fe 2 O 4 MNPs were synthesized using tragacanth gum as biotemplate and Metals nitrate as the metal source by the sol-gel method. The sample was characterized by powder X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), vibrating sample magnetometer (VSM), scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX). The nanoparticles exhibit ferromagnetic behaviour at room temperature, with a saturation magnetization of 52.76 emu/g and a coercivity of 80.14 Oe. Thereupon, Ni-Cu-Zn ferrite nanoparticles as an efficient catalyst was used for the synthesis of polyhydroquinoline derivatives via multi-component reactions under microwave irradiation. Simple work-up, mild reaction conditions, short reaction times, use of an economically convenient catalyst, and excellent product yields are the advantageous features of this method. The catalyst could easily be recycled and reused few times without noticeable decrease in catalytic activity.

Chromatographic identification of “green capping agents” extracted from Nasturtium officinale (Brassicaceae) leaves for the synthesis of MoO3 nanoparticles

“…Biogenic is an emerging synthesis pathway among nanoresearchers [9][10][11][12][13][14][15][16][26][27][28][29] for the synthesis of metal NPs with enhanced properties, for examples plant mediated NPs are reported as excellent photocatalysts for degradation of various organic wastes [29][30][31][32][33]. The need of the present moment is to deepen the nanoparticle biogenic synthesis methodologies by defining the mechanism involved in the synthesis process and to individuate the phyto-stabilizer and phyto-reducer agents of the synthesized material.…”

Facile synthesis of indolizines using layered double hydroxides@poly(p‐phenylenediamine) as a catalyst with a green tool (neat technology)

“…A palladium‐catalyzed direct arylation of 2‐arylimidazo[1,2‐ a ]pyridines with o ‐dihaloarenes via double C&bond;H activation has been reported. The process afforded benzo[ a ]imidazo[5,1,2‐ cd ]indolizine derivatives in DMF and good yields …”

Efficient Sonogashira and A3 coupling reactions catalyzed by biosynthesized magnetic Fe3O4@Ni nanoparticles from Euphorbia maculata extract

“…Therefore, it is essential to develop new approaches for the synthesis of nanoparticles. Moreover, it is imperative to find suitable and eco‐friendly methods . Unique properties arise from particularly high surface to volume ratio .…”