(R)-2-acetoxymethyl-2-methoxymethoxymethyl-4-methyl-2,5-dihydro-pyrrole-1-carboxylic acid tert-butyl ester 在
甲醇 、
potassium carbonate 作用下,
反应 3.0h,
以78%的产率得到(S)-2-hydroxymethyl-2-methoxymethoxymethyl-4-methyl-2,5-dihydro-pyrrole-1-carboxylic acid tert-butyl ester