Highly diastereoselective synthesis of quaternary α-trifluoromethyl α-amino acids by addition of benzylzinc reagents to chiral imines of trifluoropyruvate
作者:Jie Yang、Qiao-Qiao Min、Yi He、Xingang Zhang
DOI:10.1016/j.tetlet.2011.07.006
日期:2011.9
An effective and facile method for highly diastereoselective synthesis of quaternary α-trifluoromethyl α-amino acids was developed in good yields with high diastereoselectivity (dr >20:1) via MgCl2-accelerated addition of benzylzinc reagents (Knochel type organozinc reagents) to (R)-phenylglycinol methyl ether based imines of trifluoropyruvate.