cis-5-Amino-2,2-dimethyl-6-hydroxy-1,3-dioxepane 、 5-(N-2,3-Diacetoxypropylacetamido)-2,4,6-triiodo-N-methylisophthalamic acid chloride 在
三乙胺 作用下,
以
异丁酰胺 、
乙酸乙酯 为溶剂,
生成 5-(N-2,3-Diacetoxypropylacetamido)-2,4,6-triiodo-N-(cis-2,2-dimethyl-6-hydroxy-1,3-dioxepan-5-yl)-N'-methylisophthalamide