Copper(I) oxide has been found to effectively catalyse the multicomponent click synthesis of fully substituted 5-alkynyl 1,2,3-triazoles from organic halides, sodium azide, and terminal alkynes in methanol under ambient conditions.
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