5-[3-(2R-formyl-5-oxo-pyrrolidin-1-yl)-propyl]-thiophene-2-carboxylic acid methyl ester 、 7-{2R-[4-(3-methoxymethyl-phenyl)-3-oxo-but-1-enyl]-5-oxo-pyrrolidin-1-yl}-heptanoic acid ethyl ester 、
dimethyl 3-(3-biphenyl)-2-oxopropanephosphonate 在
NaH 作用下,
以
乙酸乙酯 为溶剂,
生成 5-{3-[2R-(4-biphenyl-3-yl-3-oxo-but-1-enyl)-5-oxo-pyrrolidin-1-yl]-propyl}-thiophene-2-carboxylic acid methyl ester 、
5-{3-[2R-(4-bi phenyl-3-yl-3-oxo-but-1-enyl)-5-oxo-pyrrolidin-1-yl]-propyl}-thiophene-2-carboxylic acid methyl ester