(S)-1-Benzyloxy-3-(5-chloro-2-methoxy-phenyl)propan-2-ol 、 (1S)-2-bromo-1-(5-fluoro-2-hydroxybenzyl)ethyl acetate 以gave 3.8 g (70%) of (1S)-2-bromo-1-(5-chloro-2-hydroxybenzyl)ethyl acetate as a light brown oil的产率得到(S)-acetic acid 1-bromomethyl-2-(5-chloro-2-hydroxy-phenyl)-ethyl ester