نتایج جستجو برای: multi component reactions

تعداد نتایج: 1195877  

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

one of the most important goals in medicinal chemistry is the development of new techniques and new heterocyclic compounds with pharmaceutical activity. the present study aimed to use a method for the synthesis of some 1,2-dihydro-1-arylnaphtho [1,2-e] [1,3] oxazine-3-ones. the question this study tried to answer was this reaction can be performed in present of nano-fe2o3 as an acid catalyst an...

Journal: :iranian journal of catalysis 0
javad safaei-ghomi department of chemistry, qom branch, islamic azad university, qom, i. r. iran. jalal shapoori department of chemistry, qom branch, islamic azad university, qom, i. r. iran. mohammad ali ghasemzadeh department of chemistry, qom branch, islamic azad university, qom, i. r. iran.

in this study, cui nanoparticles as an efficient catalyst was used for the synthesis of 14-phenyl-8h-dibenzo[a,i]xanthene-8,13(14h)-diones using aldehydes, 2-naphthol and 2-hydroxynaphthalene-1,4-dione in aqueous media. in this study, it was found that water was the most effective solvent compared to others. among several catalysts that were tested for this multi-component synthesis, cui nanopa...

Journal: :journal of nanostructures 2012
a. bamoniri s. rohani

a general synthetic route to the synthesis of imidazoles has been developed using nano sbcl5/sio2 under solvent-free conditions. the multi-component reactions of aldehydes, benzil and ammonium acetate were carried out to afford some trisubstituted imidazole derivatives. this method provides several advantages like simple work-up, environmentally benign, and shorter reaction times along with hig...

Journal: :Organic & biomolecular chemistry 2016
Akinari Sumita Yuko Otani Tomohiko Ohwada

While some sequential electrophilic aromatic substitution reactions, known as tandem/domino/cascade reactions, have been reported for the construction of aromatic single skeletons, one of the most interesting and challenging possibilities remains the one-pot build-up of a complex aromatic molecule from multiple starting components, i.e., ultimately multi-component electrophilic aromatic substit...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1390

in this thesis, a better reaction conditions for the synthesis of spirobarbiturates catalyzed by task-specific ionic liquid (2-hydroxy-n-(2-hydroxyethyl)-n,n-dimethylethanaminium formate), calcium hypochlorite ca(ocl)2 or n-bromosuccinimide (nbs) in the presence of water at room temperature by ultrasonic technique is provided. the design and synthesis of spirocycles is a challenging task becaus...

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