Sodium Hydroxide → 2-Thioanisylterepthalic acid

HRID 1885380

Reaktionsgleichung

Reaktionsgleichung von HRID 1885380
[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([S:8][CH3:9])=[CH:4][C:3]=1[C:10]1[CH:19]=[C:18]([C:20]([O:22]C)=[O:21])[CH:17]=[CH:16][C:11]=1[C:12]([O:14]C)=[O:13].[OH-].[Na+]>CO>[CH3:1][C:2]1[CH:7]=[CH:6][C:5]([S:8][CH3:9])=[CH:4][C:3]=1[C:10]1[CH:19]=[C:18]([C:20]([OH:22])=[O:21])[CH:17]=[CH:16][C:11]=1[C:12]([OH:14])=[O:13]

Komponenten

4

Edukt 2

HCID 14798Sodium HydroxideHCID 86744855Dimethyl 2-thioanisylterepthalate

Produkt 1

HCID 867448562-Thioanisylterepthalic acidAusbeute 76,7 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 887MethanolLösungsmittel

Versuchsvorschrift

Dimethyl 2-thioanisylterepthalate (3.92 g) was suspended in methanol (45.9 ml), 5M NaOH (13.5 ml) was added. The reaction mixture was heated at reflux for 1.5 hours. The methanol was removed under reduced pressure. The residue was treated with ethyl acetate and water and the layers separated. The aqueous layer was washed once with ethyl acetate. The aqueous layer was then acidified with 2N HCl and extracted three times with ethyl acetate. These combined organic extracts were then dried over MgSO4, filtered and evaporated under reduced pressure gave the product (2.75 g).

Aufarbeitung

  1. temperatureThe reaction mixture was heated
  2. temperatureat reflux for 1.5 hours
  3. customThe methanol was removed under reduced pressure
  4. additionThe residue was treated with ethyl acetate and water
  5. customthe layers separated
  6. washThe aqueous layer was washed once with ethyl acetate
  7. extractionextracted three times with ethyl acetate
  8. dry with materialThese combined organic extracts were then dried over MgSO4
  9. filtrationfiltered
  10. customevaporated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-325ac8452fac4a5c96e60f9b3bb1bdce
Quelldatensatz
uspto-grants-1992_09
Patentnummer
US05144028

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