Multi-component synthesis
A competent multi component synthesis new triazolopyrimidines
... the synthesis, reactivity, spectroscopic characterization and crystallographic studies of 1,2,4-triazolo[1,5-c]pyrimidines [2] 1,2,4-triazolo[4,3-a]pyrimidines [3] and 1,2,4- triazolo[4,3-c]pyrimidines [4] have ...
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Facile ionic liquid-mediated, multi component synthesis of dihydro-1H-furo[2,3-c]pyrazoles
... the synthesis of dihydro-1H-furo[2,3-c]pyrazoles by a one-pot four-component reaction of β-keto ester, hydrazine, aromatic aldehyde and pyridinium salt in the presence of tri ethyl amine under microwave ...
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BISMUTH (III) BROMIDE AS AN EFFICIENT CATALYST FOR THE MULTI COMPONENT SYNTHESIS OF DIHYDRO 2 OXYPYRROLES
... 31. Venugopala KN, Manjula K, Nayak SK, Subrahmanya BK, Jayashankaragowda VP, Chalannavar RK, Gleiser RM, Odhav B. Synthesis and antimosquito properties of 2,6- substituted benzo(d)thiazole & 2,4-substituted ...
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An one pot multi component synthesis of novel 1,2,4 triazolo[1,5 a]pyrimidines
... Several synthetic strategies have been reported for the preparation of triazolopyrimidine derivatives. [5, 13-18] Most of these are based on modification of the classical one-pot Biginelli reaction [5, 14-17] and in some ...
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Nano Nickel Cobalt Ferrite Catalysed One Pot Multi Component Synthesis of Xanthenediones and Acridinediones
... of multi cycling, easy work-up and clean reaction profiles apart from the lack of necessity ligands and in minimizing the organic waste generation when com- pared to the conventational catalytic ...acridinediones ...
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ONE-POT MULTI-COMPONENT SYNTHESIS OF [1,4]BENZOXAZINE- ISOXAZOLE HYBRIDS AND THEIR ANTIBACTERIAL ACTIVITY
... the synthesis of novel 4-((3-(aryl) isoxazol-5-yl) methyl)-2H-benzo[b][1,4] oxazin-3(4H)-one derivatives (4a-j) were synthesized by the Cu(I)-catalyzed reaction of in situ generated nitrile oxides with in situ ...
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Proficient One pot, Multi component Synthesis of Pyrano[2,3 c]pyrazole Derivatives Using C8[DABCO]Br as Catalyst in Aqueous Medium
... the synthesis of pyrano[2,3-c]pyrazole derivatives from aldehydes, malonitrile, β-ketoesters, and hydrazine hydrate (or 3-methyl-1-phenylpyrazol-5-one) based on the catalytic efficiency of bromide DABCO in an ...
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An eco friendly solvent free one pot multi component synthesis of Coumarin thiazolidinone derivatives
... In conclusion, we have developed a convenient alum-catalyzed synthetic protocol for Coumarin thiazolidinone derivatives; an alum is commercially available and inexpensive. The time required for the completion of the ...
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Brønsted Acidic Ionic Liquid: An Efficient and Reusable Catalyst for the Multi-Component Synthesis of Dihydropyrimidinones under Solvent-Free Conditions
... [1] (a) J. M. Nuss and P. A. Renhowe, “Advances in solid-supported organic synthesis methods”, Curr Opin Drug Discov Devel, 1999, 2, 631-650. (b) S. F. Oliver and C. Abell, “Combinatorial synthetic design”, ...
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One Pot Multi Component Synthesis of Novel Dihydropyridine Derivatives
... There are several methods reported [1-15] for the synthesis of dihydropyridine derivatives so far. These synthetic methods include the reaction of alkyl [16] and aryl [17] aldehydes with ammonia acetate and -keto ...
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N1,N1,N2,N2-tetramethyl-N1,N2-bis(sulfo)ethane-1,2-diaminium Chloride ([TMBSED][Cl]2): An Efficient Ionic Liquid Catalyst for the One-pot Synthesis of Dihydropyrrol-2-ones and Tetrahydropyridines
... This work shows that N 1 ,N 1 ,N 2 ,N 2 -tetramethyl-N 1 ,N 2 - bis(sulfo)ethane-1,2-diaminium chloride, which can be prepared by simple operation from commercially available and cheap starting materials, is an ...
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One Pot Synthesis and Characterization of Some New 1,3,5 Trisubstituted Pyrazoline Derivatives
... pot multi component synthesis technique, we herein report the synthesize and characterization of a series of new 1,3,5-trisubstituted pyrazoline compounds containing azo-linkages and benzyloxy ...
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Application of tris (trihexyltetradecylphosphonium) gadolinium hexachloride as magnetically recoverable catalyst for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones in solvent-free conditions
... one-pot multi-component synthesis of 3,4-dihydropyrimidin-2(1H)-one derivatives has been developed by one pot three component reaction of various aldehydes, β-dicarbonyl, and urea in the ...
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A two component model of texture for analysis and synthesis
... Table 1 lists the number of parameters used per pixel at each scale and the cor- responding SNR of the synthesised texture in dB. Because the prototype is a patch taken from the same texture, the cost of this, in ...
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Synthesis of Substituted Imidazoles via a Multi-Component Condensation Catalyzed by p-toluene Sulfonic Acid, PTSA
... rimonabant, synthesis, biological properties, and molecular modeling investigations of thiazoles, triazoles, and imidazoles as potent and selective CB1 cannabinoid receptor antagonists, ...
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Cost-effectiveness analysis of the mobile phone manufacturing sector by using a novel fuzzy multi-objective programming model
... H Company functions as the test object in this work. The main product of H Company is smart phones, while its subsidiaries produce the main components for smart phones including key chips (i = 1), panels (i = 2), circuit ...
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Vol 9, No 2 (2020)
... the synthesis of heterocyclic compounds; herein we wish to report one-pot four-component synthesis of pyranopyrazoles by the reaction of aromatic aldehydes, malononitrile, hydrazine hydrate and ethyl ...
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Multi-component seismic array analysis
... The difference in the parameters is reflected by the waves classified along the coda. Out of the 4 dominant phases clearly seen on the record sections only 2 of them (the signals starting at 10 and 16 seconds) are ...
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Synthesis and Fundamental Properties of Cu Based Bulk Glassy Alloys in Binary and Multi component Systems
... precipitation mode of interfacial diffusion-controlled growth of nuclei with decreasing nucleation rate. The difference in the precipitation modes is the origin of the difference in the stability of the supercooled liquid. ...
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Synthesis, characterization of a multi component metal oxide (Al0 88Fe0 67Zn0 28O3) and elimination of As (III) from aqueous solution
... [9]. Multi-metal-oxides are of major commercial ...the multi-metal-oxides composites and to seek ways to improve the selectivity for interacting with selective species is a ...
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