Optically active β-formyl β-hydroxy esters are prepared in high enantiomeric excess by treating 2-acyl-1,3-diazabicyclo[3.3.0]octane derivatives, prepared from (S)-2-(substituted aminomethyl)pyrrolidine and phenylglyoxal monohydrate or methyl hydroxymethoxyacetate, with metal enolates of ethyl acetate.
用
乙酸乙酯的
金属烯醇化物处理 2-酰基-1,3-二
氮杂双环[3.3.0]
辛烷衍
生物(由 (S)-2-(substituted aminomethyl)pyrrolidine 和苯基
乙二醛一
水合物或羟基
甲氧基乙酸甲酯制备),可制备出光学活性高对映体过量的 β-甲酰基 β-羟基酯。