Cu(I)-Catalyzed Intramolecular Cyclization of Alkynoic Acids in Aqueous Media: A “Click Side Reaction”
作者:Thomas L. Mindt、Roger Schibli
DOI:10.1021/jo702030e
日期:2007.12.1
Alkynoic acids, in particular, 4-pentynoic acid derivatives, undergo intramolecular cyclizations to enol lactones under reaction conditions typically applied for the Cu(I)-catalyzed cycloaddition of terminal alkynes and azides (click chemistry). Starting from appropriate alkynoic acid derivatives, either enol lactones or 1,2,3-triazole click products can be obtained selectively by Cu(I) catalysis in
炔酸,特别是4-戊酸衍生物,在通常用于末端炔烃和叠氮化物的Cu(I)催化的环加成反应的反应条件下,进行分子内环化成烯醇内酯(点击化学)。从合适的炔酸衍生物开始,烯醇内酯或1,2,3-三唑点击产物可以通过在水性介质中的Cu(I)催化选择性地获得。