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green-solvents
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Synthesis of Rhodanine-Oxindole Derivatives by Using Multi-Component Reactions in Green Solvent
, M.Sc. Thesis Sharif University of Technology ; Matloubi Moghaddam, Firouz (Supervisor)
Abstract
Nowadays, heterocyclic compounds have become extremely important in various industries, especially the pharmaceutical industry.In this project, an efficient and environmentally friendly path is presented to synthesize numerous rhodanine-oxindole derivatives in polyethylene Glycol in one pot-four components procedure. This pathway doesn't need harsh reaction conditions such as high temperature, long time, catalysts, complicated separation steps, toxic solvents, etc. all products have been made under green strategy with high yield.
Synthesis and Characterization of Some Heterocyclic Compounds Containing Nitrogen and Sulfur Atoms Via Vilsmeier-haack Intermediate
,
M.Sc. Thesis
Sharif University of Technology
;
Matloubi Moghaddam, Firouz
(Supervisor)
Abstract
Heterocyclic compounds participate in a wide range of reactions, and a large number of them are known. These compounds differ in size and number of rings, type and number of heteroatoms and position of heteroatoms. In the meantime, nitrogen-containing heterocyclic compounds have been widely used in the pharmaceutical and agricultural industries due to their high biological activity. Thioxindole, a cyclic thioamide compound, has been recognized as a biologically active compound and its importance and impact in the development of chemistry are growing. In this thesis, 2-chloroquinoline-3-carbaldehyde is synthesized on acetanilide via Vilsmeier-Haack reaction, a classical reaction in organic...
Polymer-Supported Bis-1,2,4-triazolium ionic tag framework for an efficient Pd(0) catalytic system in biomass derived γ-valerolactone
, Article ACS Sustainable Chemistry and Engineering ; Volume 7, Issue 7 , 2019 , Pages 6939-6946 ; 21680485 (ISSN) ; Mahmoudi, H ; Bivona, L. A ; Piermatti, O ; Bagherzadeh, M ; Fusaro, L ; Aprile, C ; Marrocchi, A ; Vaccaro, L ; Sharif University of Technology
American Chemical Society
2019
Abstract
A resin-bound 1,2,4-triazolium ionic tag has been used as support for the preparation of solid palladium nanoparticles (Pd(0)-POLI-TAG-Pd). Owing to the pincer-type architecture of the triazolium ligand, the stabilization of a high amount of palladium nanoparticles (16 wt %) has been possible. The catalytic system has been fully characterized and used in low amounts (i.e., 0.1 mol % palladium loading) in representative Heck-Mizoroki cross-coupling processes. A negligible release of the metal was demonstrated, and a high activity was obtained over more runs. Besides, the protocol has been optimized for the use of safe biomass-derived γ-valerolactone reaction medium
Polyethylene glycol (PEG) as a green solvent for carbon-carbon bond formation reactions
, Article Journal of Molecular Liquids ; Volume 207 , 2015 , Pages 73-79 ; 01677322 (ISSN) ; Mahmoodi Hashemi, M ; Sharif University of Technology
Abstract
In recent years, polyethylene glycol (PEG) has attracted special attention as a green and inexpensive solvent in various chemical transformations. The current critical review deals with breakthrough achievements for the applications of PEG as an alternative reaction media well-known coupling reactions such as Suzuki, Heck, Stille, Sonogashira, Hiyama and some challenging organic reactions for carbon-carbon bond formation
Synthesis and Characterization of Nanocluster Polyoxometalates as Catalysts in Oxidation and Coupling Reactions
, Ph.D. Dissertation Sharif University of Technology ; Bagherzadeh, Mojtaba (Supervisor)
Abstract
In this study, a series of polyoxometalates nanoclusters is synthesized and their catalytic properties have been investigated in oxidation and coupling reactions. In the first and second sections, {Mo36} nanoclusters are primarily prepared. Then, the mesoporous silica, as a solid surface with a regular chanals and cavities through electrostatic interactions between polyoxo anions and amine functional groups with positive charge, is used to stabilize the nanocluster as well as the final structure of SBA-15-NH3 +•{Mo36}- formed. As a green and environmentally friendly substrate, natural zeolite is used to stabilize the nanoclusters and the {Mo36}@zeolite obtained. Both heterogeneous catalysts...
A copper-free Sonogashira reaction using nickel ferrite as catalyst in water
, Article Catalysis Communications ; Volume 60 , 2014 , Pages 82-87 ; 15667367 (ISSN) ; Tavakoli, G ; Rezvani, H. R ; Sharif University of Technology
Abstract
The Sonogashira reaction using nickel ferrite nanoparticles as catalyst and under copper-free conditions was investigated in water as a green solvent. Various types of aryl and alkyl halides were successfully coupled with phenyl acetylene under the optimized reaction conditions with very good to excellent yields at a short time. The catalyst is easily recoverable and can be reused for several runs with a good turnover number
Greener, nonhalogenated solvent systems for highly efficient Perovskite solar cells
, Article Advanced Energy Materials ; Volume 8, Issue 21 , 25 July , 2018 ; 16146832 (ISSN) ; Mazloum Ardakani, M ; Gholipour, S ; Tavakoli, M. M ; Turren Cruz, S. H ; Taghavinia, N ; Gratzel, M ; Hagfeldt, A ; Saliba, M ; Sharif University of Technology
Wiley-VCH Verlag
2018
Abstract
All current highest efficiency perovskite solar cells (PSCs) use highly toxic, halogenated solvents, such as chlorobenzene (CB) or toluene (TLN), in an antisolvent step or as solvent for the hole transporter material (HTM). A more environmentally friendly antisolvent is highly desirable for decreasing chronic health risk. Here, the efficacy of anisole (ANS), as a greener antisolvent for highest efficiency PSCs, is investigated. The fabrication inside and outside of the glovebox showing high power conversion efficiencies of 19.9% and 15.5%, respectively. Importantly, a fully nonhalogenated solvent system is demonstrated where ANS is used as both the antisolvent and the solvent for the HTM....