N-(4-acetylamino-benzyl)-2-(2,2-dimethyl-5-oxo-[1,3]-dioxolan-4-ylidene)-N-methoxy-acetamide 在
3-[(4-Fluoro-benzyl)-methoxy-carbamoyl]-2-hydroxy-acrylic acid methyl ester 作用下,
以
甲醇 为溶剂,
以gave the title ester as white crystals (35% yield)的产率得到3-[(4-Acetylaminobenzyl)-methoxy-carbamoyl]-2-hydroxy-acrylic acid methyl ester