Results 201 to 210 of about 43,142 (242)

Synthesis of substituted septanosyl-1,2,3-triazoles

Carbohydrate Research, 2007
A 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, Emily C, Cherney, Nicole L, Snyder, Mark W, Peczuh   +3 more
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Method for Assigning Structure of 1,2,3-Triazoles

The Journal of Organic Chemistry, 2012
1,4-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, Andrew, Anderson, Carl, Brophy, Frances, Crowell, Zachary, Funk   +4 more
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Synthesis of glucosylated 1,2,3-triazole derivatives

Carbohydrate Research, 1999
A 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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Structural basis of the impact sensitivities of 1-picryl-1,2,3-triazole, 2-picryl-1,2,3-triazole, 4-nitro-1-picryl-1,2,3-triazole, and 4-nitro-2-picryl-1,2,3-triazole

The Journal of Physical Chemistry, 1989
The isomeric pairs 1-picryl-1,2,3-triazole, 2-picryl-1,2,3-triazole and 4-nitro-1-picryl-1,2,3-triazole, 4-nitro-1-picryl-1,2,3-triazole differ dramatically in their impact sensitivity. Since these pairs of compounds have identical oxygen balance this strongly suggests that there is a difference in the decomposition mechanism.
C. B. Storm, R. R. Ryan, J. P. Ritchie, J. H. Hall, S. M. Bachrach   +4 more
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Mass spectra of 1,2,3-triazoles

Journal of the Chemical Society, Perkin Transactions 1, 1979
The mass spectra of substituted 1,2,3-triazoles [RTR′, (1)](R′= H, CO2X, COR″, pyrazolyl, or isoxazolyl) are discussed. For a wide variety of structural types, P+ is always strong and [P+ 1]+ is often of significant intensity. Subsequent breakdown patterns are strongly dependent on the substituents R and R′.
Sidney I. Miller, Ruey-Rong Lii, Yoshinari Tanaka   +2 more
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Azolyl-substituted 1,2,3-triazoles

Russian Journal of Organic Chemistry, 2016
Huisgen reaction of (E)-1,5-diarylpent-2-en-4-yn-1-ones and (E)-1,5-diarylpent-1-en-4-yn-3-ones afforded 1-aryl-3-(5-aryl-1H-1,2,3-triazol-4-yl)prop-2-en-1-ones and 3-aryl-1-(5-aryl-1H-1,2,3-triazol-4-yl)-prop-2-en-1-ones, respectively. (E)-1-Aryl-3-(5-phenyl-1H-1,2,3-triazol-4-yl)prop-2-en-1-ones reacted with hydrazine hydrate and phenylhydrazine to ...
A. A. Golovanov, I. S. Odin, V. V. Bekin, A. V. Vologzhanina, I. S. Bushmarinov, S. S. Zlotskii, Yu. L. Gerasimov, P. P. Purygin   +7 more
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ChemInform Abstract: 1,2,3‐TRIAZOLES

Chemischer Informationsdienst, 1974
AbstractIn einer Zusammenfassung wird die Synthese der verschiedenen 1,2,3‐Triazole aus Aziden mit Acetylenen oder aktivierten Methylenverbindungen und ausgehend von α‐Diketonen oder α‐Diketonderivaten er1äutert,und die Struktur, die physikalischen Eigenschaften sowie die chemischen Reaktionsweisen der Triazole bei Substitutionsreaktionen, Umwandlung ...
T. L. GILCHRIST, G. E. GYMER
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A vibrational assignment for 1,2,3-triazole

Journal of the Chemical Society B: Physical Organic, 1969
I.r. spectra of 1,2,3-triazole in the vapour and liquid states and in solution are reported and discussed. From these, and by comparison with the spectra of other simple five-membered heterocycles, vibrational assignments are proposed. The i.r. spectra is satisfactorily interpreted in terms of an asymmetric structure.
E. Borello, A. Zecchina, E. Guglielminotti   +2 more
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New synthesis of 1,2,3-triazoles

Journal of the Chemical Society D: Chemical Communications, 1971
Treatment of 1,2,4-triazin-3(2H)-ones with ethereal, chloramine at room temperatures gives 1,2,3-triazoles in high yield.
C. W. Rees, A. A. Sale
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1,2,3-Triazoles

2022
Nuno M.M. Moura, Augusto C. Tomé
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