Water → 2-{(S)-2-[4-(4-methoxy-3-methyl-phenyl)-2,5-dioxo-imidazolidin-1-yl]-3-phenyl-propionylamino}-thiazole-4-carboxylic acid methyl ester

HRID 2222985Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2222985
[CH3:1][O:2][C:3]([C:5]1[N:6]=[C:7]([NH:10][C:11](=[O:34])[C@@H:12]([NH:20][C:21](=[O:33])[CH:22]([NH2:32])[C:23]2[CH:28]=[CH:27][C:26]([O:29][CH3:30])=[C:25]([CH3:31])[CH:24]=2)[CH2:13][C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[S:8][CH:9]=1)=[O:4].C(N(C(C)C)CC)(C)C.[O:44]=[C:45](Cl)OC(Cl)(Cl)Cl.O>ClCCl>[CH3:1][O:2][C:3]([C:5]1[N:6]=[C:7]([NH:10][C:11](=[O:34])[C@@H:12]([N:20]2[C:21](=[O:33])[CH:22]([C:23]3[CH:28]=[CH:27][C:26]([O:29][CH3:30])=[C:25]([CH3:31])[CH:24]=3)[NH:32][C:45]2=[O:44])[CH2:13][C:14]2[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=2)[S:8][CH:9]=1)=[O:4]

Komponenten

6

Edukt 4

HCID 962WaterHCID 10426DiphosgeneHCID 81531DiisopropylethylamineHCID 866040592-{(S)-2-[2-amino-2-(4-methoxy-3-methyl-phenyl)-acetylamino]-3-phenyl-propionylamino}-thiazole-4-carboxylic acid methyl ester

Produkt 1

HCID 586154922-{(S)-2-[4-(4-methoxy-3-methyl-phenyl)-2,5-dioxo-imidazolidin-1-yl]-3-phenyl-propionylamino}-thiazole-4-carboxylic acid methyl ester

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Reaktionsbedingungen

Temperatur
-10 °C

Versuchsvorschrift

A solution of 2-{(S)-2-[2-amino-2-(4-methoxy-3-methyl-phenyl)-acetylamino]-3-phenyl-propionylamino}-thiazole-4-carboxylic acid methyl ester (0.40 g , 0.83 mmol) and diisopropylethylamine (0.72 mL, 4.14 mmol) in dichloromethane (20 mL) was added to a solution of diphosgene (0.07 mL, 0.58 mmol) in dichloromethane (20 mL) at −10° C. The mixture was stirred at −10° C. for 0.5 hours. Water was added to quench the reaction, then the mixture was extracted with ethyl acetate. The organic layer was separated, washed with water, brine, dried over sodium sulfate and concentrated. The residue was purified by chromatography over silica gel eluted with ethyl acetate to give 2-{(S)-2-[4-(4-methoxy-3-methyl-phenyl)-2,5-dioxo-imidazolidin-1-yl]-3-phenyl-propionylamino}-thiazole-4-carboxylic acid methyl ester as an off white foam (0.29 g, 69%).

Aufarbeitung

  1. customto quench
  2. customthe reaction
  3. extractionthe mixture was extracted with ethyl acetate
  4. customThe organic layer was separated
  5. washwashed with water, brine
  6. dry with materialdried over sodium sulfate
  7. concentrationconcentrated
  8. customThe residue was purified by chromatography over silica gel
  9. washeluted with ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-99891ee4d8fc4786b80b586df3ed17fb
Quelldatensatz
uspto-grants-2008_05
Patentnummer
US07371869B2

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