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
Alkynoicacids, 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 alkynoicacid derivatives, either enol lactones or 1,2,3-triazole click products can be obtained selectively by Cu(I) catalysis in