Water → (E)-methyl 2-[2-(6-bromopyrid-2-yloxymethyl)phenyl]-3-hydroxyacrylate

HRID 850158

Reaktionsgleichung

Reaktionsgleichung von HRID 850158
C[O-].[Na+].[CH:4]([O:6][CH3:7])=[O:5].[Br:8][C:9]1[N:14]=[C:13]([O:15][CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=2[CH2:23][C:24](OC)=[O:25])[CH:12]=[CH:11][CH:10]=1.O>C1(C)C=CC=CC=1>[Br:8][C:9]1[N:14]=[C:13]([O:15][CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=2/[C:23](=[CH:24]\[OH:25])/[C:4]([O:6][CH3:7])=[O:5])[CH:12]=[CH:11][CH:10]=1

Komponenten

6

Edukt 4

HCID 962WaterHCID 7865Methyl formateHCID 10942334Sodium MethoxideHCID 19366333Methyl 2-(6-bromopyrid-2-yloxymethyl)phenylacetate

Produkt 1

HCID 19366331(E)-methyl 2-[2-(6-bromopyrid-2-yloxymethyl)phenyl]-3-hydroxyacrylateAusbeute 97,9 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Versuchsvorschrift

Sodium methoxide (0.34 g, 6.0 mmol) and methyl formate (1 ml, 16 mmol) were added portionwise to a stirred solution of methyl 2-(6-bromopyrid-2-yloxymethyl)phenylacetate (0.8 g, 2.3 mmol) in dry toluene (10 ml) under a nitrogen atmosphere at room temperature. After 8 hours at room temperature the mixture was poured into water and extracted with ethyl acetate. The ethyl acetate extracts were washed with water, dried and the ethyl acetate removed to give (E)-methyl 2-[2-(6-bromopyrid-2-yloxymethyl)phenyl]-3-hydroxyacrylate (0.82 g, 80%) as a brown gum which was used in the final stage without further purification; 1H NMR (270 MHz)δ: 3.74(3H,s), 5.28(2H,s), 6.66(1H,d), 7.06(1H,d), 7.15-7.55(6H,m), 11.95(1H,d) ppm.

Aufarbeitung

  1. extractionextracted with ethyl acetate
  2. washThe ethyl acetate extracts were washed with water
  3. customdried
  4. customthe ethyl acetate removed

Quellen und Nachweise

ORD-Eintrag
ord-db5f8688c1a342a2b271f64fbfe5a352
Quelldatensatz
uspto-grants-2000_01
Patentnummer
US06015905

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