Results 111 to 120 of about 17,972 (231)

Convenient Synthesis and Biological Evaluation of Modafinil Derivatives: Benzhydrylsulfanyl and Benzhydrylsulfinyl [1,2,3]triazol-4-yl-methyl Esters

Molecules, 2011
Simple synthesis and biological activities of modafinil derivatives are described. The key reactions include condensation of acid and propargyl alcohol, subsequent 1,3-dipolar cycloaddition reaction of alkynes and (3-azido-propyl)cyclohexane or (4-azido ...
Seikwan Oh, Mankil Jung, Eunyoung Lim, Jee-Young Son, Yeonju Lee, Jae-Chul Jung   +5 more
doaj   +1 more source

1, 3-Dipolar Cycloaddition of Diazomethane with Carbon-Carbon Unsaturated Systems Involving Nitrofuran Ring

Journal of Synthetic Organic Chemistry, Japan, 1968
1, 3-Dipolar cycloaddition reaction of diazomethane with 5-nitro-2-furylacrylic acid gave 4- (5'-nitro-2'-furyl) -3-carbomethoxypyrazoline (3), mp 184485°C, in 80% yield. A similar reaction with 5-nitro-2-furylpropiolic acid afforded the corresponding isomeric mixture of the 2-pyrazole derivatives in 25% yield. (1) was refluxed in toluene to afford 2- (
Tadashi SASAKI, Katsuhiko SHOJI
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Microwave assisted one pot 1 ,3-dipolar cycloaddition reactions of novel dihydropyran derived nitrone

, 2012
Organic Chemistry Labor~ tory, Sikkim Government College, Gangtok-737 102, Sikkim, India E-mail : bchakraborty42@gmail.com Manuscript received 20 April 2011, revised 19 September. 2011, accepted 17 October 2011 Microwave assisted 1,3-dipolar cycloaddition reactions of novel dihydropyran derived nitrone with various dipolarophiles have been studied in ...
Chakraborty, Bhaskar, Prawin Kumar Sharma   +1 more
openaire   +1 more source

Regioselective Synthesis of Some Pyrazole Scaffolds Attached to Benzothiazole and Benzimidazole Moieties

Journal of Chemistry, 2014
Condensation of 2-(benzothiazol-2-yl)acetonitrile (1) or 2-(1-methyl-1H-benzimidazol-2-yl)acetonitrile (2) with thiophene-2-carbaldehyde afforded the corresponding acrylonitrile derivatives 3 or 4, respectively.
Nabila A. Kheder, Yahia N. Mabkhot, Fawzia R. Zahian, Sara S. Mohamed   +3 more
doaj   +1 more source

Surface modification of UV Cured epoxy resins by click Chemistry

, 2010
A novel method for surface modification of UV-cured epoxy network was described. Photoinitiated cationic copolymerization of a bisepoxide, namely 3,4-epoxy cyclohexylmethyl 3,4-epoxycyclohexanecarboxylate (EEC) with epibromohydrine (EBH) by using a ...
Abadie, Adamson, Ak, Boey, Chandran, Chen, Collman, Dag, Decker, Decker, Decker, Dufour, Durmaz, Erbil, Ergin, Gacal, Gacal, Gao, Haensch, Haensch, Haensch, Karagoz, Kim, Kiskan, Kolb, Kukut, Li, Lummerstorfer, Lutz, Nagai, Nakajima, Opsteen, Parrish, Ranjan, Rengifo, Sangermano, Sangermano, Schlegel, Sun, Takimoto, Tasdelen, Tornoe, Tsarevsky, Tsarevsky, Wang, Yagci, Yagci, Yagci   +47 more
core   +1 more source

Reaction Mechanisms of Transition-Metal-Catalyzed Azide-Alkyne Cycloaddition “Click” Reactions: A DFT Investigation

, 2015
International audienceDFT calculations at the PBE0/LANL2DZ level have been performed on model compounds to investigate the reaction mechanism of two recently reported metal-catalyzed alkyne azide cycloaddition (MAAC).
Astruc, Didier, Ikhlef, Djamila, Kahlal, Samia, Maouche, Boubekeur, Saillard, Jean-Yves, Wang, Changlong   +5 more
core   +3 more sources

Design, Synthesis, enzyme inhibitory activity and molecular docking studies of new 1,2,3-triazole linked nucleobases

Results in Chemistry
Thirteen novel 1,2,3-triazole linked nucleobases (5a-m) were designed and efficiently synthesized as potential human enzyme inhibitors. The target compounds were synthesized by using Copper (I)-catalysed Huisgen-Sharpless-Meldal 1,3-dipolar cycloaddition
Aditya Aggarwal, Chanchal Vashisth, Komal Bharti, Neera Raghav, Surender Kumar   +4 more
doaj   +1 more source

Transition metal catalyzed 1-3-dipolar cycloaddition of carbethoxycarbene to acrylonitrile [PDF]

Tetrahedron Letters, 1974
Paulissen, R., Moniotte, Ph, Hubert, André J., Teyssié, Philippe   +3 more
openaire   +2 more sources

Synthesis of some isoxazoline, isoxazole and pyrazole carboxylic acids as the precursors of new 1,2-diacyl-1-alkylhydrazines [PDF]

, 2013
A number of isoxazoline, isoxazole and pyrazole carboxylic acids or their esters has been synthesized via the 1,3-dipolar cycloaddition of corresponding nitrile oxides or diazomethane to unsaturated dipolarophiles.
Antonevich, I. P., Katok, Ya. M.
core  

1, 3-Dipolar Cycloaddition Reaction of Aziridinedicarboximide

Chemical and Pharmaceutical Bulletin, 1968
SADAO OIDA, EIJI OHKI
openaire   +2 more sources