Sodium Hydroxide → HCID 9880243, Verbindung
Reaktionsgleichung
[N:1]1[CH:6]=[CH:5][CH:4]=[CH:3][C:2]=1[C:7]1[N:11]=[C:10]([C:12]2[CH:17]=[C:16]([C:18]([O:20]C)=[O:19])[CH:15]=[C:14]([O:22][CH2:23][CH:24]=[CH2:25])[CH:13]=2)[O:9][N:8]=1.[OH-].[Na+]>CO>[N:1]1[CH:6]=[CH:5][CH:4]=[CH:3][C:2]=1[C:7]1[N:11]=[C:10]([C:12]2[CH:17]=[C:16]([C:18]([OH:20])=[O:19])[CH:15]=[C:14]([O:22][CH2:23][CH:24]=[CH2:25])[CH:13]=2)[O:9][N:8]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A stirred suspension of 3-(2-Pyridyl)-5-(3-allyloxy-5-(methoxycarbonyl)phenyl)-1,2,4-oxadiazole (1.8 g, 5.28 mmol) in methanol (40 mL) was treated with 1M sodium hydroxide (7.9 mL, 7.9 mmol) and the reaction stirred at ambient temperature for 36 hours. The solvent was removed in vacuo, and the residue was dissolved in water (30 mL) and then acidified (pH 4–5) by the addition of 2N hydrogen chloride. The resulting precipitate was collected and dried to afford 1.6 (94%) of 3-(2-pyridyl)-5-(3-allyloxy-5-carboxyphenyl)-1,2,4-oxadiazole: 1H NMR (DMSO): δ−8.81 (d, 1H), 8.29 (s, 1H), 8.22 (d, 1H), 8.05 (m, 1H), 7.91 (s, 1H), 7.76 (s, 1H), 7.65 (m, 1H), 6.09 (m, 1H), 5.47 (dd, 1H), 5.33 (dd, 1H), 4.80 (d, 2H).