反应详情

N,N′-bis[2,3-di(2-chloroacetoxy)propyl]-5-(2-chloroacetamido)-2,4,6-triiodoisophthalamide in N,N-dimethylacetamide and acetonitrile, from Example 3, was hydrolyzed by adding 130 mL of 10N sodium hydroxide solution (1.3 moles). Water (36 mL) was then added to the mixture to give a homogeneous solution. 1N Hydrochloric acid (100 mL, 0.1 moles) was added to precipitate the N,N′-bis(2,3-dihydroxypropyl)-5-(2-chloroacetamido)-2,4,6-triiodoisophthalamide. The precipitate was collected and washed with water. The wet product was dried at 60° C. in a vacuum oven to give 71.6 g of product, 92.2% yield. The material was 100% pure by HPLC analysis.

1. customto give a homogeneous solution
2. customto precipitate the N,N′-bis(2,3-dihydroxypropyl)-5-(2-chloroacetamido)-2,4,6-triiodoisophthalamide
3. customThe precipitate was collected
4. washwashed with water
5. customThe wet product was dried at 60° C. in a vacuum oven