Sodium Hydroxide → HCID 67367602, Verbindung
Reaktionsgleichung
[OH-].[Na+].[Si:3]([O:10][CH2:11][C:12]1[N:16]([CH2:17][C:18]([C:20]2[CH:25]=[CH:24][C:23]([Cl:26])=[CH:22][CH:21]=2)=[O:19])[C:15]([C:27]([O:29]C)=[O:28])=[CH:14][CH:13]=1)([C:6]([CH3:9])([CH3:8])[CH3:7])([CH3:5])[CH3:4]>O1CCOCC1>[C:6]([Si:3]([CH3:5])([CH3:4])[O:10][CH2:11][C:12]1[N:16]([CH2:17][C:18]([C:20]2[CH:21]=[CH:22][C:23]([Cl:26])=[CH:24][CH:25]=2)=[O:19])[C:15]([C:27]([OH:29])=[O:28])=[CH:14][CH:13]=1)([CH3:9])([CH3:8])[CH3:7]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Reaktionsbedingungen
- Temperatur
- 70 °C
Versuchsvorschrift
Aqueous sodium hydroxide solution (1 M, 1.78 mL) was added to a solution of methyl 5-({[tert-butyl(dimethyl)silyl]oxy}methyl)-1-[2-(4-chlorophenyl)-2-oxoethyl]-1H-pyrrole-2-carboxylate (375 mg, 0.89 mmol) in 1,4-dioxane (10 mL) and stirred at 70° C. for 2 h. The resultant brown solution was cooled to room temperature and concentrated in vacuo to −50% of its starting volume. The reaction mixture was acidified to ˜pH 4 by the addition of aqueous HCl (1 M, 1.78 mL) and extracted with EtOAc. The aqueous layer was further extracted with EtOAc (2×10 mL) The combined organic layers were washed with brine, dried (MgSO4), filtered and concentrated in vacuo to give 5-({[tert-butyl (dimethyl)silyl]oxy}methyl)-1-[2-(4-chlorophenyl)-2-oxoethyl]-1H-pyrrole-2-carboxylic acid as a brown gum (70% purity, 270 mg, yield ˜95%) The mixture was used without further purification. ESI-MI m/z [M+Na]+ 432.0.