5-[(2,2-Dimethyl-[1,3]dioxan-5-ylcarbamoyl)-methoxy]-N,N'-bis-(2-hydroxy-1-hydroxymethyl-ethyl)-2,4,6-triiodo-isophthalamide 在
sodium methylate 作用下,
以
甲醇 、
N,N-二甲基甲酰胺 为溶剂,
以2.9%的产率得到N,N'-bis[2-hydroxy-1-(hydroxymethyl)ethyl]-5-[(2,2-dimethyl-1,3-dioxan-5-yl)(hydroxyacetyl)amino]-2,4,6-triiodo-1,3-benzenedicarboxamide