[2-(4-Benzyloxy-benzyloxy)-5-bromo-phenyl]-diazo-acetic acid (S)-1-methyl-2-oxo-2-pyrrolidin-1-yl-ethyl ester 在
Rh
2[(N-(4-dodecylphenyl)sulfonyl)-(S)-prolinate]4 作用下,
以
二氯甲烷 为溶剂,
生成 (1'S,2S,3S)-2-(4-benzyloxyphenyl)-5-bromo-2,3-dihydrobenzofuran-3-carboxylic acid 1'-methyl-2'-oxo-2'-pyrrolidin-1'-ylethyl ester 、 2-(4-benzyloxyphenyl)-5-bromo-2,3-dihydrobenzofuran-3-carboxylic acid 1'-methyl-2'-oxo-2'-pyrrolidin-1'-ylethyl ester