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Showing 1 to 14 of 14 for “"1,2,3-TRIAZOLES"”.
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JULIA-KOCIENSKI APPROACH TO 4-SUBSTITUTED 1- ALKENYL-1H-1,2,3-TRIAZOLES
… to the synthesis of 4-substituted N-vinyltriazoles was<br />developed. The triazole cores were assembled by copper-catalyzed 1,3-dipolar<br />cycloaddition of 1-phenyl-1H-tetrazol-5-yl (PT) azidomethyl sulfide with: pmethoxyphenyl, 2-pyridyl, and triisopropylsilyl alkynes. Subsequent …
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1,2,3-triazoles as X-factor in gold(I) activation of challenging C-C triple bond transformations
… which provides 1,4-disubstituted 1,2,3-triazoles has been reported in 2001. New method for highly funtionalized 1,2,3-triazole synthesis becomes very desirable along with the discovery of unique properties of this heterocyclic structure. Our group focused on the synthesis of functional …
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Investigations into the Manipulation of 1,2,3-Triazoles and Towards an Asymmetric ‘Click’ Reaction of Meso Bis-Alkynes
… undertaken to generate various substituted 1,2,3-triazoles and a small group of bis alkyne-containing compounds, followed by their attempted application in an asymmetric ‘click’ reaction. The first chapter gives an outline to the importance of desymmetrization within organic synthesis, providing …
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Reacciones de creación de enlaces C-N y C-C catalizadas por Pd: Síntesis de NH-1, 2, 3-triazoles y olefinas sustituidas
… de sodio con haloalquenos. Síntesis de NH-1,2,3-triazoles" y "Reacciones de formación de enlaces C-C catalizadas por paladio a partir de N-tosilhidrazonas". Este último capítulo se encuentra dividido a su vez en dos partes: "Síntesis de enoléteres y enaminas" y "Síntesis de olefinas enantiopuras: …
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Structural manipulation of conjugated polymers
… diynes are coupled to produce a library of 1,2,3-triazoles and new conjugated polymers, poly(arylenetriazoline)s.
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ΜΕΛΕΤΗ ΦΩΤΟΧΗΜΙΚΩΝ ΑΝΤΙΔΡΑΣΕΩΝ 1-(Ν-1,2,3-ΤΡΙΑΖΟΛΥΛΟ)-ΙΜΙΔΙΩΝ
… WHICH LED TO THE FORMATION OF THE 1(2)H-1,2,3-TRIAZOLES AND DIBENZAMIDE. IRRADIATION OF THE 1- (N,1,2,3-TRIAZOLYL)-IMIDES THROUGH A QUARTZ FILTED LED TO THE SAME PRODUCTS, AS PREVIOUSLY MENTIONED, VIA A Π*-ASSISTED B- CLEAVAGE OF THE N-N BOND. THE TRIAZOLES WERE ALSO IRRADIATED IN THE PRESENCE …
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Design and Synthesis of CB1 Receptor Ligands and Synthesis of Amphibian Alkaloids
… and a series of 4,5- diaryl-2-substituted-1,2,3-triazoles. Our research group has been interested in the synthesis of amphibian alkaloids due to their interesting biological activities. We have recently developed a general synthetic strategy which can rapidly prepare a few amphibian alkaloids …
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Development of biotin protein ligase inhibitors from Staphylococcus aureus as new antibiotics
… ring to generate 1,4,5- trisubstituted 1,2,3-triazoles. A class of 5-iodo 1,2,3-triazoles was synthesised from 1- iodoacetylene 4.02 and azides using CuAAC. Subsequent halogen exchange reaction allowed conversion of iodide to other halogens. 5-Fluoro-1,2,3-triazole 4.07, the lead compound from …
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Lewis acid catalysis in organic synthesis
… system gives only 1,4-disubstituted 1,2,3-triazoles. Reactions of Alkyl and aryl azides with a variety of terminal alkynes were successfully catalyzed using CuCl-RTIL catalytic system. This catalytic system has the additional characteristics includes simple product isolation, insensitivity …
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Synthesis of 4-Azidocoumarins and Their Use in Copper-Catalyzed Azide-Alkyne Cycloaddition reactions
… thus prepared, the 1,4-disubstituted-1,2,3 triazoles were synthesized via a copper-catalyzed alkyne-azide cycloaddition (CuAAC) reaction. CuAAC reactions of the azides were optimized by screening of various copper catalysts 6 and copper tetrakis acetonitrile hexafluorophosphate …
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Pyrrolo[2,3-d]pyrimidine-based π-conjugated fluorophores with 1,2,3-triazole and ethynyl linkers: synthesis and photophysical properties /
… along with 1,4-disubstituted 1,2,3-triazoles some amounts of 1,5-disubstituted isomers were formed. The synthesized 2,4-bis(4-aryl-1,2,3-triazol-1-yl)pyrrolopyrimidines exhibit efficient fluorescence in the range from 402 nm to 650 nm. A comparative study of Sonogashira and Stille …
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Pirolo[2,3-d]pirimidino π-konjuguotų fluoroforų, turinčių 1,2,3-triazolo ir etinil jungtukus, sintezė ir fotofizikinės savybės /
… along with 1,4-disubstituted 1,2,3-triazoles some amounts of 1,5-disubstituted isomers were formed. The synthesized 2,4-bis(4-aryl-1,2,3-triazol-1-yl)pyrrolopyrimidines exhibit efficient fluorescence in the range from 402 nm to 650 nm. A comparative study of Sonogashira and Stille …
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Design, Synthesis and Biological Evaluation of Novel Cannabinoid Antagonist
… for a series of 4,5-diaryl-1-substituted-1,2,3-triazoles of ester and ketones is described. These derivatives were synthesized via a one-pot regiospecific click/acylation reaction sequence from 1-azido-2,4-dichlorobenzene and commercially available arylacetylenes. From the structure-activity …
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Síntesis de nuevos análogos del calcitriol (1a, 25-dihidroxivitamina D_3) fósforo funcionalizados : estudio de una nueva metodología para la formación del sistema triénico
… sistema CuCl2-Liareno(cat.), para rendir 1,2,3-triazoles con excelente regioselectividad. Este sistema fue aplicado exitosamente para el desarrollo de una nueva metodología que permite incorporar un triazol y un fosfonato, constituyendo un nuevo tipo de cadena lateral híbrida. El amplio espectro …