DBSA-catalyzed Friedel–Crafts alkylation of cyclic ketene dithioacetals with alcohols in water
作者:Haifeng Yu、Peiqiu Liao
DOI:10.1016/j.tetlet.2016.05.062
日期:2016.6
A novel DBSA-catalyzed Friedel–Crafts alkylation of cyclic ketene dithioacetals, internal alkenes with highly nucleophilic carbon atom adjacent to the electron-withdrawing group, with alcohols in water has been developed. The reaction is efficient in the presence of catalyst loading as low as 10 mol % in water at reflux, and a wide range of alkylated ketene dithioacetals are synthesized in excellent