synthetic protocol has been developed for the controllable preparation of bis(1,2,3-triazole)s and 5-alkynyl-1,2,3-triazoles from alkyne and azide under different temperatures. Various azides and alkynes were used as substrates for the reactions and the successful applications in nucleoside analogues manifested the values of this method in syntheses of bioactive molecules. Besides, a possible temperature-guided
Cu
<sup>II</sup>
‐Catalyzed Oxidative Formation of 5‐Alkynyltriazoles
作者:Peiye Liu、Christopher J. Brassard、Justin P. Lee、Lei Zhu
DOI:10.1002/asia.201901581
日期:2020.2.3
to an oxidation reaction that results in alkynyltriazole. The organic base DBN is effective in accelerating the copper(II)-catalyzedoxidation of terminal alkyne or copper(I) acetylide, which is intercepted by an organic azide to produce alkynyltriazole. The proposed mechanistic model suggests that the selectivity between alkynyl- and protiotriazole, and other acetylide or triazolide oxidation products
In this paper, an efficient synthesis of 5-alkynyl-1,2,3-triazoles through a one-pot aerobic oxidative coupling reaction of various alkynes and azides has been developed. Further derivatization of 5-alkynyl-1,2,3-triazoles readily yielded 5-carbonyl-1,2,3-triazoles, 5-carboxylic-1,23-triazole, 5-hydroxyalkyl-1,2,3-triazoles and 5-quinoxaline-1,2,3-triazole, which provided an entry into structurally diverse 5-functionali zed-1,2,3-triazol es. (C) 2014 Ling-Jun Li and Gui-Sheng Zhang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
Synthesis, crystal and structural studies of 5-alkynyl-1,2,3-triazoles
compounds, highlighting the presence of π−π stacking interactions together with a C–H–N triazole-methylene interaction observed in compound 3 as the main intermolecular interactions which define the crystal packing and supramolecular network in these compounds. Further theoretical calculations of global descriptors and molecular electrostatic maps demonstrate a charge distribution connecting phenyl substituents