Hydrochloric Acid → 10-[2-Hydroxy-3-(4-(2-carboxyethyl)-phenoxy)-propyl]-1,4,7-tris(carboxymethyl)-1,4,7,10-tetraazacyclododecane

HRID 362747

Reaktionsgleichung

Reaktionsgleichung von HRID 362747
[C:1]([CH2:4][N:5]1[CH2:16][CH2:15][NH:14][CH2:13][CH2:12][N:11]([CH2:17][C:18]([OH:20])=[O:19])[CH2:10][CH2:9][N:8]([CH2:21][C:22]([OH:24])=[O:23])[CH2:7][CH2:6]1)([OH:3])=[O:2].[O:25]1[CH2:42][CH:26]1[CH2:27][O:28][C:29]1[CH:34]=[CH:33][C:32]([CH2:35][CH2:36][C:37]([O:39]CC)=[O:38])=[CH:31][CH:30]=1.[OH-].[K+].Cl>O1CCOCC1.O>[OH:25][CH:26]([CH2:27][O:28][C:29]1[CH:34]=[CH:33][C:32]([CH2:35][CH2:36][C:37]([OH:39])=[O:38])=[CH:31][CH:30]=1)[CH2:42][N:14]1[CH2:13][CH2:12][N:11]([CH2:17][C:18]([OH:20])=[O:19])[CH2:10][CH2:9][N:8]([CH2:21][C:22]([OH:24])=[O:23])[CH2:7][CH2:6][N:5]([CH2:4][C:1]([OH:3])=[O:2])[CH2:16][CH2:15]1

Komponenten

7

Edukt 4

HCID 313Hydrochloric AcidHCID 14797Potassium HydroxideHCID 1078301,4,7-Tris(carboxymethyl)-1,4,7,10-tetraazacyclododecaneHCID 113796982,3-Epoxy-1-[4-(2-ethoxycarbonylethyl)-phenoxy]-propane

Produkt 1

HCID 5416442610-[2-Hydroxy-3-(4-(2-carboxyethyl)-phenoxy)-propyl]-1,4,7-tris(carboxymethyl)-1,4,7,10-tetraazacyclododecane

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 312751,4-DioxaneLösungsmittel

Versuchsvorschrift

10 g (28.87 mmol) of 1,4,7-triscarboxymethyl-1,4,7,10-tetraazacyclododecane (=DO3A) and 12.99 g (51.96 mmol) of 2,3-epoxy-1-[4-(2-ethoxycarbonylethyl)-phenoxy]-propane are added in 80 ml of dioxane/60 ml of water and adjusted to pH 14 with 6N potassium hydroxide solution. It is stirred for 12 hours at room temperature. Then, it is refluxed for 2 hours. It is adjusted to pH 7 with 5N hydrochloric acid and evaporated to dryness in a vacuum. The residue is absorptively precipitated in 200 ml of ethanol/50 ml of chloroform at 60° C. The precipitated potassium chloride is filtered off and the filtrate is concentrated by evaporation in a vacuum. The residue is purified on a reversed-phase column (RP-18, washing with water, then elution with tetrahydrofuran/water=2:1). The main fractions are concentrated by evaporation in a vacuum.

Aufarbeitung

  1. temperatureThen, it is refluxed for 2 hours
  2. customevaporated to dryness in a vacuum
  3. customThe residue is absorptively precipitated in 200 ml of ethanol/50 ml of chloroform at 60° C
  4. filtrationThe precipitated potassium chloride is filtered off
  5. concentrationthe filtrate is concentrated by evaporation in a vacuum
  6. customThe residue is purified on a reversed-phase column (RP-18
  7. washwashing with water
  8. washelution with tetrahydrofuran/water=2:1)
  9. concentrationThe main fractions are concentrated by evaporation in a vacuum

Quellen und Nachweise

ORD-Eintrag
ord-22e65202a1d34a749c27f46153c5252a
Quelldatensatz
uspto-grants-1999_02
Patentnummer
US05871709

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