نتایج جستجو برای: magnetically recoverable nanocatalyst

تعداد نتایج: 10808  

Hassan Ghasemnejad-Bosra Mehdi Forouzani, Navabeh Nami, Omid Khalilpour Tylami

One-pot reaction of aldehydes or ketons with aniline derivatives was performed using NaBH4 and Fe3O4 magnetic nanoparticles (MNPs). The optimum amount of Fe3O4 MNPs was 5 mol% under solvent free condition. The corresponding products were obtained in good to excellent yields. The magnetically recoverable iron oxide nanoparticles are found to be efficient for synthesis of amine derivatives. These...

An efficient and convenient approach towards the synthesis of nitrogen fused imidazoheterocycles through double C-N bond formation in a single step has been achieved with a good range of substituted phenacyl bromides in the presence of magnetically recoverable Fe3O4 as a green heterogeneous nanocatalyst. The present approach was found to be environmentally benign and econo...

An efficient and convenient approach towards the synthesis of nitrogen fused imidazoheterocycles through double C-N bond formation in a single step has been achieved with a good range of substituted phenacyl bromides in the presence of magnetically recoverable Fe3O4 as a green heterogeneous nanocatalyst. The present approach was found to be environmentally benign and econo...

Journal: :Polycyclic Aromatic Compounds 2022

Fe3O4@Silicapropyl@Vanillin/Thiamin nanoparticles were synthesized by a simple immobilization method using cheap and natural materials. The nanocatalyst was analyzed XRD, FT-IR, FE-SEM, TEM, VSM TGA techniques applied as new, effective magnetically recoverable solid acid for the synthesis of azo-linked benzo[d]imidazoles or bis via reaction corresponding aldehydes 1,2-diaminobenzene in water gr...

2013
Cintia A. Menéndez Fabiana Nador Gabriel Radivoy Darío C. Gerbino

A versatile and straightforward strategy to construct a xanthone skeleton via an intermolecular catalytic coupling of 2-substituted benzaldehydes and a wide range of phenols has been developed. For this purpose, a novel and magnetically recoverable catalyst consisting of copper nanoparticles on nanosized silica coated maghemite in absence of ligand is presented. The reaction proceeds smoothly w...

Journal: :iranian journal of catalysis 0
negar zekri college of chemistry and chemical engineering, malek-ashtar university of technology, tehran, 16765-3454, i. r. iran. reza fareghi-alamdari college of chemistry and chemical engineering, malek-ashtar university of technology, tehran, 16765-3454, i. r. iran.

a series of copper and cobalt substituted nanospinel ferrites have been synthesized by the hydrothermal method. these compounds were characterized by ft-ir, xrd, edx, sem and vsm techniques. all of the synthesized nanospinel ferrites were found to be highly efficient and magnetically recoverable in the solvent-free synthesis of substituted 2,6-(2-hydroxybenzyl)-phenols (trisphenols). a wide ran...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید