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
Palladium-catalyzed coupling of a propargylglycine derivative.
作者:Geoffrey T. Crisp、Thomas A. Robertson
DOI:10.1016/s0040-4020(01)92261-6
日期:1992.4
The coupling of aryl or vinyl halides and triflates with a propargylglycine derivative under the influence of a palladium catalyst has been described. The coupling is compatible with a variety of structural types and functional groups. The coupling was also carried out an optically-active propargylglycine derivative and the products were optically active.