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
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
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.