5-Chlorovaleryl chloride → N,N'-bis[2,3-bis(acetyloxy)propyl]-5-[(5-chloro-1-oxopentyl)amino]-2,4,6-triiodo-1,3-benzenedicarboxamide

HRID 977810Notes

Reaction equation

HRID 977810 reaction equation
[Cl:1][CH2:2][CH2:3][CH2:4][CH2:5][C:6](Cl)=[O:7].[C:9]([O:12][CH:13]([CH2:42][O:43][C:44](=[O:46])[CH3:45])[CH2:14][NH:15][C:16]([C:18]1[C:23]([I:24])=[C:22]([NH2:25])[C:21]([I:26])=[C:20]([C:27]([NH:29][CH2:30][CH:31]([O:37][C:38](=[O:40])[CH3:39])[CH2:32][O:33][C:34](=[O:36])[CH3:35])=[O:28])[C:19]=1[I:41])=[O:17])(=[O:11])[CH3:10]>>[C:9]([O:12][CH:13]([CH2:42][O:43][C:44](=[O:46])[CH3:45])[CH2:14][NH:15][C:16]([C:18]1[C:23]([I:24])=[C:22]([NH:25][C:6](=[O:7])[CH2:5][CH2:4][CH2:3][CH2:2][Cl:1])[C:21]([I:26])=[C:20]([C:27]([NH:29][CH2:30][CH:31]([O:37][C:38](=[O:40])[CH3:39])[CH2:32][O:33][C:34](=[O:36])[CH3:35])=[O:28])[C:19]=1[I:41])=[O:17])(=[O:11])[CH3:10]

Participants

3

Reactant 2

HCID 740895-Chlorovaleryl chlorideHCID 98975345-Amino-N,N'-bis(2,3-dihydroxypropyl)-2,4,6-triiodo-1,3-benzenedicarboxamide Tetraacetate

Product 1

HCID 19048404N,N'-bis[2,3-bis(acetyloxy)propyl]-5-[(5-chloro-1-oxopentyl)amino]-2,4,6-triiodo-1,3-benzenedicarboxamideYield 97%

Procedure

5-Chloropentanoyl chloride (5.1 g, 33 mmol) was added dropwise to a stirred solution of N,N'-bis[2,3-bis(acetyloxy)propyl]-5-amino-2,4,6-triiodo-1,3-benzenedicarboxamide (20.5 g, 23 mmol) in N,N'-dimethylacetamide (75 ml) at 0°-5°. The reaction mixture was stirred at 5° for 1 hour, and then at room temperature for 30 hours. The solvent was removed in vacuo and the residue was dissolved in ethyl acetate (250 ml). The solution was washed with water (2×50 ml), followed by saturated aqueous NaCl (50 ml), and then dried over anhydrous sodium sulfate. Removal of the solvent in vacuo gave N,N'-bis[2,3-bis(acetyloxy)propyl]-5-[(5-chloro-1oxopentyl)amino]-2,4,6-triiodo-1,3-benzenedicarboxamide as an off-white fluffy solid (22.1 g, yield 97%, purity 98.5%).

Workup

  1. waitat room temperature for 30 hours
  2. customThe solvent was removed in vacuo
  3. dissolutionthe residue was dissolved in ethyl acetate (250 ml)
  4. washThe solution was washed with water (2×50 ml)
  5. dry with materialdried over anhydrous sodium sulfate
  6. customRemoval of the solvent in vacuo

Sources & evidence

ORD record
ord-f77fb8c59306403692e72bf3a9efbb8f
Source dataset
uspto-grants-1997_03
Patent number
US05614638

Reaction notes

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