[PDF] Top 20 Synthesis of Some Quinoline Intermediates Under Phase Transfer Catalyst
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Synthesis of Some Quinoline Intermediates Under Phase Transfer Catalyst
... were recorded on Br uker AMX-400 MHz spectrometer using TMS as an internal reference (Chemical shifts in δ , ppm). Elemental analyses were performed on Perkin Elmer CHN-analyzer. Mass spectra were recorded on Shimadzu ... See full document
5
Synthesis of a New NP Multi-Site Phase-Transfer Catalyst and Its Application to Dichlorocarbene Addition Reactions
... the synthesis of a new soluble hetero multi-site quaternary phase- transfer catalyst (NPMSPTC) was synthesized and ...this catalyst was tested for dichlorocarbene addition to various ... See full document
9
Ultrasound assisted synthesis of N-aryl indole under multi-site phase-transfer catalyst: A kinetic study
... phases, phase transfer catalysts have the ability to carry out the heterogeneo-us reactions by one of the reactants penetrating from its normal phase (generally aqueous phase) to the organic ... See full document
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Synthesis and Characterization of a New Multi-Site Phase-Transfer Catalyst: Application in Free Radical Polymerization of Benzyl Methacrylate Under Heterogeneous Condition- A Kinetic Study
... rization studies were carried out in long Pyrex tubes (4 cm X 20 cm) of about 100 ml capacity with a B-24 quick fit socket fitted with a B-24 cone with a provision for inlet and outlet terminals in order to isolate the ... See full document
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Polyethylene glycol-bis (N-methylimidazolium) dihydroxide as an efficient and recyclable basic phase-transfer catalyst for the synthesis of 4H-pyran derivatives in aqueous media
... basic phase-transfer catalyst in the synthesis of 2- amino-3-cyano-4H-pyrans via the one-pot three-component condensation reaction of aromatic aldehydes, malononitrile and 1,3-dicarbonyl ... See full document
12
Synthesis of analogues of trifenagrel using phase transfer catalyst tetrabutyl ammonium hydrogen sulphate (TBAHS)
... The prevalence of imidazoles in natural products and pharmacologically active compounds has instituted a diverse array of synthetic approaches to these heterocycles[1] Imidazoles have received significant attention due ... See full document
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Synthesis of spiro [cyclobutane-1,2'-indene]-1',3'-dione under a new multi-site phase-transfer catalyst combined with ultrasonication-a kinetic study
... The reactor was a 250 mL three-necked pyrex flask, serving the purposes of agitating the solution, inserting the thermometer, taking samples and feeding the feed. 15 g of KOH was dissolved in 30 mL deionized water in ... See full document
17
A Facile Microwave Assisted Synthesis and Antimicrobial Activity of Some Active Intermediates
... agents[10]. Some of biological activities attributed to choromone derivatives include cytotoxic (anticancer)[11], neuroprotective[12], HIV- inhibitary[13], antimicrobial[14], antioxidant ...the phase ... See full document
7
Benzylation of Imidazol Under a New Multi Site Phase Transfer Catalyst A Kinetic Study
... Idoux et al. 29 , first reported the soluble and insoluble phosphonium ion containing multi – site PTCs, which have three active sites. In resent year Wang and Lee reported the efficiency of the catalytic capabilities of ... See full document
18
Propargylation of indole under a new dual-site phase-transfer catalyst: A kinetic study
... Idoux et al. [22] first reported the soluble and the insoluble phosphonium ion containing the multi- site PTCs, which have three active sites. In resent years, Wang and Lee reported the efficiency of the catalytic ... See full document
16
Free Radical Polymerization of Methyl Methacrylate under Multi-site Phase-transfer Catalyst - A Kinetic Study
... takes place and to give a high conversion and selectivity for the desired product under mild reaction conditions 1 . The advantages of PTC system are simplicity, mild reaction conditions, use of inexpensive, ... See full document
21
A Survey of the Borrowing Hydrogen Approach to the Synthesis of some Pharmaceutically Relevant Intermediates
... necessarily transfer to large-scale reactions employing substrates of the type most commonly encountered in pharmaceutical development programme: high molecular weight, densely functionalised and often solid, with ... See full document
33
Phase Transfer Catalysis Improved Synthesis of 3,4 Dihydropyrimidinones
... The tetraalkylammonium salts have an important role as a catalyst in the Biginelli reaction (Table 1). The tetralkylammonium halide catalyst is the critical actor in this reaction. Results show that the ... See full document
5
Crystal structure, Hirshfeld surface analysis and DFT study of (2Z) 2 (4 fluorobenzylidene) 4 (prop 2 yn 1 yl) 3,4 dihydro 2H 1,4 benzothiazin 3 one
... idene)-2H-1,4-benzothiazin-3(4H)-one under phase-transfer catalysis conditions using tetra-n-butylammonium bromide (TBAB) as catalyst and potassium carbonate as base, leading to the title ... See full document
11
REACTION AND KINETIC STUDIES ON CATALYTIC VAPOR PHASE PYRIDINE SYNTHESIS
... feasibility, catalyst selection, characterization and deactivation, mass transfer effects and reaction kinetics constrained and un constrained by the coke formation and ... See full document
9
Synthesis, Characterization and Antimicrobial Activity of Some New Substituted Quinoline Hydrazones
... The synthesis of the title compound was started with the preparation of 6- bromo-4-hydroxy-2-methyl quinoline (2) which was prepared by heating the mixture of 4-bromoaniline ... See full document
7
SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL ACTIVITY OF SOME NOVEL QUINOLINE BASED IMIDAZOLES
... of quinoline based imidazoles as potential antimicrobial ...intermediate, quinoline-5,6-diamine (2) on treatment with SnCl 2 in acidic aqueous ethanol ... See full document
5
Phase Assisted 3D QSAR, Microwave Enhanced Synthesis and Evaluation of Quinoline based Antimalarial Agents
... include PHASE module version ...generation. PHASE has many uses like it is comprehensive, self-contained system for pharmacophore perception, for developing 3D quantitative structure-activity relationships ... See full document
7
The Chemoselective Fischer’s Synthesis of Indolenine Derivatives By iso-Butyric Acid As A Weak Organic Acid Catalyst
... the synthesis of indolenines despite the fact that the methodologies for the synthesis of indolenine derivatives are very limited ...acid catalyst/solvent for the synthesis of indolenines ... See full document
6
Synthesis of N-Arylisatins Using Nay Heterogeneous Catalyst Under Microwave Irradiations
... We started our work by reacting methyl-2- oxo(phenyl amino)acetate with 2- (trimethylallyl)phenyltrifluoromethanesulphonat in presence of NaY zeolite under microwave irradiation selected power(400W) for 7 minutes. ... See full document
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