Hydrochloric Acid → Ethyl 2-formyl-1,3-thiazole-4-carboxylate

HRID 907380Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 907380
C([O:3][CH:4](OCC)[C:5]1[S:6][CH:7]=[C:8]([C:10]([O:12][CH2:13][CH3:14])=[O:11])[N:9]=1)C.Cl>CC(C)=O>[CH:4]([C:5]1[S:6][CH:7]=[C:8]([C:10]([O:12][CH2:13][CH3:14])=[O:11])[N:9]=1)=[O:3]

Komponenten

4

Edukt 2

HCID 313Hydrochloric AcidHCID 16220290Ethyl 2-(diethoxymethyl)thiazole-4-carboxylate

Produkt 1

HCID 11355896Ethyl 2-formyl-1,3-thiazole-4-carboxylateAusbeute 98 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 180AcetoneLösungsmittel

Versuchsvorschrift

Ethyl 2-(diethoxymethyl)-1,3-thiazole-4-carboxylate (1.34 g, 5.17 mmol; see step (iv) above) was taken up in acetone (100 mL) and a solution of 1N HCl (12.8 mL) was then added. The solution was refluxed for 45 min and the solvent removed under reduced pressure. The residue was then dissolved in ethyl acetate (40 mL) and extracted with saturated NaHCO3 solution (2×40 mL) and brine (2×40 mL). The organic fraction was then dried (MgSO4), filtered and the solvent removed under reduced pressure to yield the sub-title compound as a light brown solid (0.937 g, 98%).

Aufarbeitung

  1. temperatureThe solution was refluxed for 45 min
  2. customthe solvent removed under reduced pressure
  3. dissolutionThe residue was then dissolved in ethyl acetate (40 mL)
  4. extractionextracted with saturated NaHCO3 solution (2×40 mL) and brine (2×40 mL)
  5. dry with materialThe organic fraction was then dried (MgSO4)
  6. filtrationfiltered
  7. customthe solvent removed under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-11a31948ecc140d4be71da7899c446b1
Quelldatensatz
uspto-grants-2011_09
Patentnummer
US08012967B2

Notizen zur Reaktion

Wird geladen…