7-(3,4-Dimethyl-phenyl)-6,8-dioxo-1,2,7-triaza-spiro[4.4]non-2-ene-3-carboxylic acid methyl ester 在
N-碘代丁二酰亚胺 作用下,
以
溶剂黄146 为溶剂,
反应 0.42h,
生成 (1S,3R)-5-(3,4-Dimethyl-phenyl)-1-iodo-4,6-dioxo-5-aza-spiro[2.4]heptane-1-carboxylic acid methyl ester 、 (1R,3R)-5-(3,4-Dimethyl-phenyl)-1-iodo-4,6-dioxo-5-aza-spiro[2.4]heptane-1-carboxylic acid methyl ester