Results 151 to 160 of about 8,430 (199)
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Mesoionic 1,2,3-Triazoles and 1,2,3-Triazole Carbenes
2014Routine access to 1,2,3-triazoles through the copper-catalyzed azide-alkyne “click” cycloaddition reaction has promoted the rapid development of 1,2,3-triazolylidenes as ligands for transition metals. The organometallic complexes containing this kind of N-heterocyclic carbene ligands (NHCs) have shown to possess unique structural characteristics ...
Jesus M. Aizpurua +2 more
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1974
Publisher Summary This chapter focuses on the chemistry of monocyclic1,2,3-triazoles as much of the chemistry of benzotriazoles and other fused systems has little in common with monocyclic triazole chemistry and provides a broad survey of methods of synthesis and reactions of triazoles. There has been considerable interest in 1,2,3-triazoles as light
T.L. Gilchrist, G.E. Gymer
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Publisher Summary This chapter focuses on the chemistry of monocyclic1,2,3-triazoles as much of the chemistry of benzotriazoles and other fused systems has little in common with monocyclic triazole chemistry and provides a broad survey of methods of synthesis and reactions of triazoles. There has been considerable interest in 1,2,3-triazoles as light
T.L. Gilchrist, G.E. Gymer
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Fluorinated 1,2,3‐Triazoles: Terra Incognita in 1,2,3‐Triazoles Chemistry
ChemistrySelectAbstract This review is devoted to the synthesis and application of fluoro‐substituted 1,2,3‐triazoles. The analysis of the available studies of fluorinated triazoles indicates exceptional value properties especially for biomedical research, despite the significant limitations of synthetic methods of their preparation.
Nazariy Pokhodylo +2 more
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Synthesis of 1,2,3‐Triazole Analogues of Lincomycin
Helvetica Chimica Acta, 2008AbstractIn search for new antibiotics we replaced the amide moiety of lincomycin 1 by a 1,2,3‐triazole ring. The 1,2,3‐triazoles 10a–10k were obtained as single regioisomers by ‘click reaction’ of azide 5 with the alkyne 9k, derived from propyl hygric acid, and the alkyl, aryl, or cycloalkyl alkynes ribosomes 9a–9j.
Collin, M P +3 more
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1,2,3-Triazoles. Part II. 4-Amino-5-aminomethyl-1,2,3-triazoles
Journal of the Chemical Society, Perkin Transactions 1, 19734-Amino-1-(and 2-)methyl-1,2,3-triazole-5-carbonitrile were made by acidic hydrolysis of 4-dimethylaminomethyleneamino-1-(and 2-)methyl-1,2,3-triazole-5-carbonitrile. These amino-nitriles, and also their known 3-methyl- and 3-benzyl-analogues, were hydrogenated to 4-amino-5-aminomethyl-1-methyl-1,2,3-triazole (1a) and its 2- and 3-methyl- and 3-benzyl ...
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1,2,3-Triazoles: Gas Phase Properties
The Journal of Organic Chemistry, 20131,2,3-Triazoles have come to the forefront as compounds of import in a vast number of applications. The fundamental properties of these species, however, remain largely unknown. Herein, the gas phase properties of 4-phenyl-1,2,3-triazole, benzotriazole, and a series of 1-phenylbenzotriazoles are described.
Kai, Wang +4 more
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Synthesis of substituted septanosyl-1,2,3-triazoles
Carbohydrate Research, 2007A carbohydrate-based oxepine, derived from 2-deoxy-D-arabino-hexopyranose, was used to prepare a family of septanosyl-1,2,3-triazoles in four steps. DMDO mediated epoxidation of the oxepine followed by trapping of the intermediate 1,2-anhydroseptanose by sodium azide gave the beta-substituted glycosyl azide. The septanosyl azide was then reacted with a
Steve, Castro +3 more
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Synthesis of glucosylated 1,2,3-triazole derivatives
Carbohydrate Research, 1999A series of potential bioactive compounds, 1-glucosyl-4-heterocyclyl-5-(p-substituted-phenyl)-1,2,3-triazoles , were synthesized. Highly stereoselective products were obtained in good yield. Primary activity screening showed that this type of N-glucosylic compound possessed antitumour and antiviral activities.
X M, Chen, Z J, Li, Z X, Ren, Z T, Huang
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Method for Assigning Structure of 1,2,3-Triazoles
The Journal of Organic Chemistry, 20121,4-Disubstituted-1H-1,2,3-triazoles 1 can easily be distinguished from the isomeric 1,5-disubstituted-1H-1,2,3-triazoles 2 by simple one-dimensional (13)C NMR spectroscopy using gated decoupling. The C(5) signal of 1 appears at δ ∼120 ppm, while the C(4) signal of 2 appears at δ ∼133 ppm. Computational studies also predict the upfield shift of C(5) of
Xavier, Creary +4 more
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