Cation-exchange Resin as Efficient, Cost-effective and Recyclable Catalyst for the Synthesis of 3-Propargylindoles
作者:J. S. Yadav、B. V. Subba Reddy、G. G. K. S. Narayana Kumar、K. V. Raghavendra Rao
DOI:10.1246/cl.2007.942
日期:2007.7.5
Indoles undergo smooth alkylation with propargylic acetates in the presence of Amberlyst A-15® under mild conditions to produce 3-propargylated indoles in excellent yields with high selectivity. This is the first example for the alkylation of indoles with propargylic acetates using the acid catalyst.
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.