Lithium Hydroxide → (4R)-4-(3,4-difluorophenyl)-6-(methoxymethyl)-2-oxo-1,2,3,4-tetrahydro-5-pyrimidinecarboxylic acid

HRID 2085438Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2085438
[F:1][C:2]1[CH:3]=[C:4]([C@@H:9]2[C:14]([C:15]([O:17]C)=[O:16])=[C:13]([CH2:19][O:20][CH3:21])[NH:12][C:11](=[O:22])[NH:10]2)[CH:5]=[CH:6][C:7]=1[F:8].[OH-].[Li+]>O.C1COCC1>[F:1][C:2]1[CH:3]=[C:4]([C@@H:9]2[C:14]([C:15]([OH:17])=[O:16])=[C:13]([CH2:19][O:20][CH3:21])[NH:12][C:11](=[O:22])[NH:10]2)[CH:5]=[CH:6][C:7]=1[F:8]

Komponenten

4

Edukt 2

HCID 3939Lithium HydroxideHCID 54490798methyl (4R)-4-(3,4-difluorophenyl)-6-(methoxymethyl)-2-oxo-1,2,3,4-tetrahydro-5-pyrimidinecarboxylate

Produkt 1

HCID 10780384(4R)-4-(3,4-difluorophenyl)-6-(methoxymethyl)-2-oxo-1,2,3,4-tetrahydro-5-pyrimidinecarboxylic acidAusbeute 90 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 21881883Oxolane--water (1/1)Lösungsmittel

Versuchsvorschrift

A stirred mixture of one mole equivalent of methyl (4R)-4-(3,4-difluorophenyl)-6-(methoxymethyl)-2-oxo-1,2,3,4-tetrahydro-5-pyrimidinecarboxylate (10.0 g, 32.0 mmol) and lithium hydroxide (2 equivalents, 1.53 g, 64.0 mol) in H2O-THF (2:1, 300 mL) was heated at reflux temperature for 1 h. The reaction mixture was concentrated, dissolved in water, washed with ethyl acetate and acidified (1 N HCl) to pH 3-4 (pH paper). The precipitated product was collected, washed with water and dried under reduced pressure to give the desired product in 90% yield.

Aufarbeitung

  1. temperaturewas heated
  2. temperatureat reflux temperature for 1 h
  3. concentrationThe reaction mixture was concentrated
  4. dissolutiondissolved in water
  5. washwashed with ethyl acetate
  6. customThe precipitated product was collected
  7. washwashed with water
  8. customdried under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-902e2ae6cc804dcd99c6471f915dba3a
Quelldatensatz
uspto-grants-2004_04
Patentnummer
US06720324B2

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