methyl (S)-2-[(R)-1-tert-butoxycarbonyl-5-oxopyrrolidin-2-yl]-2-[(S)-2,2-dimethyl-1,3-dioxolan-4-yl]-2-hydroxyacetate 在
ammonium cerium (IV) nitrate 作用下,
以
乙腈 为溶剂,
反应 4.0h,
以90%的产率得到methyl (S)-2-[(S)-2,2-dimethyl-1,3-dioxolan-4-yl]-2-hydroxy-2-[(R)-5-oxopyrrolidin-2-yl]acetate