Citric Acid → 5-Methoxyacetylamino-2,4,6-triiodisophthalic acid-N,N-bis-(methoxycarbonylmethyl)-amide-chloride

HRID 1291971Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1291971
[CH3:1][O:2][CH2:3][C:4]([NH:6][C:7]1[C:8]([I:21])=[C:9]([C:18](Cl)=[O:19])[C:10]([I:17])=[C:11]([C:15]=1[I:16])[C:12]([Cl:14])=[O:13])=[O:5].Cl.[CH3:23][O:24][C:25](=[O:33])[CH2:26][NH:27][CH2:28][C:29]([O:31][CH3:32])=[O:30].C(N(CC)CC)C.C(O)(=O)CC(CC(O)=O)(C(O)=O)[OH:44].C(=O)(O)[O-].[Na+]>CN(C)C=O.ClCCl.O>[Cl-:14].[CH3:32][O:31][C:29]([CH2:28][N:27]([CH2:26][C:25]([O:24][CH3:23])=[O:33])[C:18](=[O:19])[C:9]1[C:8]([I:21])=[C:7]([NH:6][C:4](=[O:5])[CH2:3][O:2][CH3:1])[C:15]([I:16])=[C:11]([C:12]([OH:44])=[O:13])[C:10]=1[I:17])=[O:30]

Komponenten

9

Edukt 5

HCID 311Citric AcidHCID 8471TriethylamineHCID 516892Sodium BicarbonateHCID 2727727Dimethyl Iminodiacetate HydrochlorideHCID 135899615-Methoxyacetamido-2,4,6-triiodoisophthaloyl chloride

Produkt 1

HCID 867501575-Methoxyacetylamino-2,4,6-triiodisophthalic acid-N,N-bis-(methoxycarbonylmethyl)-amide-chloride

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 962WaterLösungsmittelHCID 6228DimethylformamideLösungsmittelHCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

A solution of 66.8 g (100 mmol) of 5-methoxyacetylamino-2,4,6-triiodisophthalic acid dichloride (EP 0015867) in 300 ml of anhydrous N,N-dimethylformamide is mixed with 21.75 g (110 mmol) of iminodiacetic acid dimethyl ester-hydrochloride (synthesis according to Dubsky, Graenacher, Chem. Ber. 50, 1693 (1917)) and 30.5 ml (220 mmol) of triethylamine. A suspension results, which is stirred for 14 hours at room temperature under argon. The batch is taken up in dichloromethane, shaken out once with water, twice with 2n aqueous citric acid and once with aqueous sodium bicarbonate solution. The organic phase is dried on anhydrous magnesium sulfate and concentrated by evaporation in a vacuum. By instillation of tert-butyl ether in the concentrated solution, the title compound can be precipitated as crystalline solid, which is suctioned off and dried in a vacuum.

Aufarbeitung

  1. customA suspension results
  2. dry with materialThe organic phase is dried on anhydrous magnesium sulfate
  3. concentrationconcentrated by evaporation in a vacuum
  4. customBy instillation of tert-butyl ether in the concentrated solution, the title compound can be precipitated as crystalline solid, which
  5. customdried in a vacuum

Quellen und Nachweise

ORD-Eintrag
ord-00d55bd08aaa4746bdd3ccdcc710804b
Quelldatensatz
uspto-grants-1998_05
Patentnummer
US05756066

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