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Enantioselective Friedel–Crafts reactions between phenols and N-tosylaldimines catalyzed by a leucine-derived bifunctional catalyst†
Guo-Xing Li,Jin Qu
Chemical Communications Pub Date : 04/17/2012 00:00:00 , DOI:10.1039/C2CC31735D
Abstract

Enantioselective Friedel–Crafts reactions between phenols and N-tosylaldimines were developed using a bifunctional catalyst readily prepared from L-leucine. The chiral benzylic amine products were obtained in high yields (up to 96% yield) and good to high enantiomeric excesses (up to 95% ee).

Graphical abstract: Enantioselective Friedel–Crafts reactions between phenols and N-tosylaldimines catalyzed by a leucine-derived bifunctional catalyst
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