Highly diastereoselective synthesis of arylglycine derivatives via TFA-promoted Friedel–Crafts reactions of phenols with cyclic glyoxylate imines
作者:Yong-Jun Chen、Fei Lei、Li Liu、Dong Wang
DOI:10.1016/s0040-4020(03)01142-6
日期:2003.9
Optically active α-arylglycine derivatives were synthesized by Brønsted acid (TFA)-promoted Friedel–Crafts reaction of various phenols with chiral cyclic glyoxylate imines (2a–c), followed by deprotection with Pd(OH)2/C under H2. The diastereoselectivities of the initially formed F–C reaction products are up to 99%.