Highly enantioselective phase-transfer-catalytic alkylation of 2-phenyl-2-oxazoline-4-carboxylic acid tert-butyl ester for the asymmetric synthesis of alpha-alkyl serines
Research Institute of Pharmaceutical Sciences and College of Pharmacy, Seoul National University, San 56-1, Shinlim-Dong, Gwanak-Gu, Seoul 151-742, Korea. ssjew@plaza.snu.ac.kr