methyl (S)-4-methyl-2-(2-oxo-2,5-dihydro-1H-pyrrol-1-yl)pentanoate 、
以
二氯甲烷 为溶剂,
生成 (S)-methyl 2-(4-(4-ethyl-3,5-dimethyl-1H-pyrrol-2-yl)-2-oxopyrrolidin-1-yl)-4-methylpentanoate 、 methyl 2-(4-(4-ethyl-3,5-dimethyl-1H-pyrrol-2-yl)-2-oxopyrrolidin-1-yl)-4-methylpentanoate