1,4-Dioxo-1,4-dihydro-naphthalene-2-carboxylic acid (S)-1-methyl-2,5-dioxo-pyrrolidin-3-yl ester 在
zinc(II) chloride 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
生成 2-Carboxymethyl-5-hydroxy-naphtho[1,2-b]furan-4-carboxylic acid (S)-1-methyl-2,5-dioxo-pyrrolidin-3-yl ester