Hydrochloric Acid → 2-(2-Methoxyphenyl)-1,3-thiazole-4-carboxylic acid
Reaktionsgleichung
[CH3:1][O:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[C:9]1[S:10][CH:11]=[C:12]([C:14]([O:16]CC)=[O:15])[N:13]=1.[OH-].[Na+].Cl>CCO>[CH3:1][O:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[C:9]1[S:10][CH:11]=[C:12]([C:14]([OH:16])=[O:15])[N:13]=1Komponenten
5
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
To a stirred solution of ethyl 2-(2-methoxy-phenyl)thiazole-4-carboxylate (0.27 g, 1.03 mmol) in EtOH (10 mL) was added 1N NaOH (aq) (5 mL). The resulting mixture was heated to reflux for 2 h. The mixture was cooled to RT, acidified with 1N HCl (aq) and concentrated by rotary evaporation. The residue was extracted with CH2Cl2 (3×15 mL). The extracts were combined, dried over MgSO4, filtered and concentrated by rotary evaporation to afford the title compound as an off-white solid. EI-MS m/z 236 (M+H).