Results 91 to 100 of about 38,452 (298)
Synthesis and Properties of 6-Aryl-4-azidocinnolines and 6-Aryl-4-(1,2,3-1H-triazol-1-yl)cinnolines
Molecules, 2019 An efficient approach towards the synthesis of 6-aryl-4-azidocinnolines was developed with the aim of exploring the photophysical properties of 6-aryl-4-azidocinnolines and their click reaction products with alkynes, 6-aryl-4-(1,2,3-1H-triazol-1-yl ...
Natalia A. Danilkina +11 more
doaj +1 more source
An aqueous medium synthesis and tautomerism study of 3(5)-amino-1,2,4-triazoles
, 2009 A catalyst-free highly efficient synthesis of 3(5)-amino-5(3)-(het)aryl-1,2,4-triazoles in aqueous mediumwas performed using conventional heating and microwave irradiation.
W. Chui (23304466) +3 more
core
, 2016 A series of 1,4-disubstituted 1,2,3-triazoles having thioether as well as amide linkage were synthesized from aryl(prop-2-yn-1-yl)sulfanes and 2-azido-N-substituted acetamides through Cu(I) catalyzed click reaction.
C. P. Kaushik (748698) +3 more
core +1 more source
Pd-catalyzed regioselective C-H chlorination of disubstituted 1,2,3-triazoles
, 2018 This paper mainly studied Pd-catalyzed regioselective chlorination of disubstituted 1,2,3-triazoles directed by the 1,2,3-triazole ring. A series of regioselective chlorinated products were synthesized in 47–86% yields using Pd(OAc)2 as a catalyst and ...
Qiong Mo (5262569) +3 more
core +1 more source
Molecules, 2011 A straightforward and reliable method for the regioselective synthesis of steroidal 1,4-disubstituted triazoles and 1,5-disubstituted tetrazoles via copper(I)-catalyzed cycloadditions is reported. Heterocycle moieties were efficiently introduced onto the
János Wölfling +7 more
doaj +1 more source
Angewandte Chemie, EarlyView.Catalytic, intramolecular N‐heterocycle arylation by nucleophilic aromatic substitution (SNAr) is now available for synthesis of highly strained macrocycles and medium‐sized heterobiaryl atropisomeric rings, including atropopeptides. Key to the approach is the ability to generate a strong base catalytically, taking advantage of base‐embedding ...
Alireza Abbasi Kejani +7 more
wiley +2 more sources
Metal-Free Click Synthesis of Functional 1-Substituted-1,2,3-Triazoles
, 2019 The 1,2,3-triazole group is one of the most important connective linkers and functional aromatic heterocycles in modern chemistry. The boom in growth of, in particular, 1,4-disubstituted triazole products since the early 2000’s, can be largely attributed
Marie-Claire Giel (7462496) +6 more
core +1 more source
Synthesis and Fluorescent Behaviour of 2‑Aryl-4,5-dihydro‑1H‑1,2,4-triazoles
, 2016 A series of new 4,5-dihydro-1H-1,2,4-triazoles was synthesized from amidrazones and acetylenedicarboxylic acid esters in the presence of pyridine in toluene.
Olga O. Nesterenko (3564023) +4 more
core +1 more source
, 2019 A new copper-catalyzed selective synthesis of N1- and N2-oxyalkylated 1,2,3-triazoles has been developed through a three-component reaction of alkynes, TMSN3, and ethers. Through this methodology, a series of N1- and N2-oxyalkylated 1,2,3-triazoles could
Pengli Bao +11 more
core +1 more source
Nuclear Quadrupole Resonance Spectroscopy: Tautomerism and Structure of Functional Azoles
Crystals, 2019 The Nuclear Quadrupole Resonance spectroscopy data of functionalized azoles (imidazoles, triazoles and corresponding benzazoles) are reviewed and critically discussed. The possibility of studying the tautomerism of azoles by the NQR method is considered.
Lyudmila I. Larina
doaj +1 more source