Hydrochloric Acid → HCID 66597256, Verbindung

HRID 1627840Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1627840
[CH2:1]([C:3]1[S:24][C:6]2=[N:7][C:8]([CH3:23])=[C:9]([CH2:18][C:19]([O:21]C)=[O:20])[C:10]([C:11]3[CH:16]=[CH:15][C:14]([CH3:17])=[CH:13][CH:12]=3)=[C:5]2[C:4]=1[CH3:25])[CH3:2].[O-2].[Li+].[Li+].Cl>O1CCOCC1.O>[CH2:1]([C:3]1[S:24][C:6]2=[N:7][C:8]([CH3:23])=[C:9]([CH2:18][C:19]([OH:21])=[O:20])[C:10]([C:11]3[CH:12]=[CH:13][C:14]([CH3:17])=[CH:15][CH:16]=3)=[C:5]2[C:4]=1[CH3:25])[CH3:2]

Komponenten

6

Edukt 3

HCID 313Hydrochloric AcidHCID 166630Lithium oxideHCID 66597207HCID 66597207, Verbindung

Produkt 1

HCID 66597256HCID 66597256, VerbindungAusbeute 58,1 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 312751,4-DioxaneLösungsmittel

Reaktionsbedingungen

Temperatur
65 °C

Versuchsvorschrift

To a solution of methyl 2-(2-ethyl-3,6-dimethyl-4-p-tolylthieno[2,3-b]pyridin-5-yl)acetate (0.077 g; 0.218 mmol) in dioxane (5 mL) and water (1.4 mL) was added a 1N lithium oxide solution (1.4 mL; 1.40 mmol). The reaction mixture was heated at 65° C. for 2 h. After cooling to room temperature, the reaction mixture was acidified with 1N HCl (pH˜2) and partially concentrated under reduced pressure. The residue was partitioned between ethyl acetate and water. The organic layer was washed with brine, dried over sodium sulphate, filtered and concentrated under reduced pressure. The residue was crystallized from a mixture of ethyl acetate/heptane to afford 0.043 g (58%) of the title compound as a white powder.

Aufarbeitung

  1. temperatureAfter cooling to room temperature
  2. concentrationpartially concentrated under reduced pressure
  3. customThe residue was partitioned between ethyl acetate and water
  4. washThe organic layer was washed with brine
  5. dry with materialdried over sodium sulphate
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customThe residue was crystallized from a mixture of ethyl acetate/heptane

Quellen und Nachweise

ORD-Eintrag
ord-99e353c33e7144adaf1bf708e42ac1dd
Quelldatensatz
uspto-grants-2014_07
Patentnummer
US08785638B2

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