Organocatalytic enantioselective Friedel–Crafts alkylation of simple phenols with trifluoropyruvate
作者:Jun-Ling Zhao、Li Liu、Chun-Ling Gu、Dong Wang、Yong-Jun Chen
DOI:10.1016/j.tetlet.2007.12.129
日期:2008.2
Enantioselective Friedel–Crafts alkylation of simple phenols (4a–j) with 3,3,3-trifluoropyruvate (3) was accomplished by using chiral cinchona alkaloid catalyst 2h (10 mol %). High yields and enantioselectivities (71–94% ee) of the Friedel–Crafts alkylation products were obtained.
通过使用手性金鸡纳生物碱催化剂2h(10 mol%),将简单的酚(4a – j)与3,3,3-三氟丙酮酸(3)进行对映选择性Friedel–Crafts烷基化。获得了Friedel-Crafts烷基化产品的高收率和对映选择性(71-94%ee)。