Hydrochloric Acid → HCID 66597311, Verbindung

HRID 1627838Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1627838
[CH3:1][C:2]1[S:23][C:5]2=[N:6][C:7]([CH3:22])=[C:8]([CH2:17][C:18]([O:20]C)=[O:19])[C:9]([C:10]3[CH:15]=[CH:14][C:13]([CH3:16])=[CH:12][CH:11]=3)=[C:4]2[C:3]=1[CH3:24].[O-2].[Li+].[Li+].Cl>O1CCOCC1.O>[CH3:1][C:2]1[S:23][C:5]2=[N:6][C:7]([CH3:22])=[C:8]([CH2:17][C:18]([OH:20])=[O:19])[C:9]([C:10]3[CH:11]=[CH:12][C:13]([CH3:16])=[CH:14][CH:15]=3)=[C:4]2[C:3]=1[CH3:24]

Komponenten

6

Edukt 3

HCID 313Hydrochloric AcidHCID 166630Lithium oxideHCID 66597412HCID 66597412, Verbindung

Produkt 1

HCID 66597311HCID 66597311, VerbindungAusbeute 37 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 312751,4-DioxaneLösungsmittel

Reaktionsbedingungen

Temperatur
60 °C

Versuchsvorschrift

To a solution of methyl 2-(2,3,6-trimethyl-4-p-tolylthieno[2,3-b]pyridin-5-yl)acetate (0.049 g; 0.144 mmol) in dioxane (3.5 mL) and water (0.9 mL) was added a 1N lithium oxide solution (0.9 mL; 0.90 mmol). The reaction mixture was heated at 60° 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 0.017 g (37%) 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-3abc41d546814dc7a40fba9f54ff5604
Quelldatensatz
uspto-grants-2014_07
Patentnummer
US08785638B2

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