FeCl3-catalyzed propargylation of aromatic compounds with propargylic acetates
作者:Zhuang-Ping Zhan、Yuan-Yuan Cui、Hui-Juan Liu
DOI:10.1016/j.tetlet.2006.10.038
日期:2006.12
A new method for the synthesis of propargylated aromaticcompounds is developed. The reaction was carried out at room temperature in the presence of a catalytic amount of FeCl3 in acetonitrile, high product yields were obtained with excellent regioselectivity and the reaction proceeded smoothly without exclusion of moisture or air.
A cross-coupling reaction between secondary propargylic acetates and alkenylboronic acids proceeded to give 1,4-enynes in good yields without adding transition metal catalyst and base. This simple protocol was also applicable to arylboronicacids, which gave 3-arylated alkynes in good yields. The observed induction period suggested that the reaction of propargylic acetates and organoboronic acids was