Sodium borohydride → HCID 16756661, Verbindung
Reaktionsgleichung
C([O:3][C:4]([C:6]1[S:10][N:9]=[C:8]([C:11]2[CH:16]=[CH:15][C:14]([Cl:17])=[CH:13][CH:12]=2)[N:7]=1)=O)C.[BH4-].[Na+]>CCO>[Cl:17][C:14]1[CH:13]=[CH:12][C:11]([C:8]2[N:7]=[C:6]([CH2:4][OH:3])[S:10][N:9]=2)=[CH:16][CH:15]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
To a solution of 3-(4-chlorophenyl)-[1,2,4]thiadiazole-5-carboxylic acid ethyl ester (0.85 g, 3.16 mmol) in EtOH (30 ml) was added sodium borohydride (0.30 g, 7.90 mmol) portion wise. The resulting reaction mixture was stirred at room temperature for 2 h. After the completion of the reaction (TLC monitoring), the reaction mass was cooled to 0° C., quenched it with 10 ml of water and concentrated under vacuum. Added 100 ml water and extracted with ethyl acetate (3×50 ml). The combined organic layer was dried over Na2SO4, filtered and concentrated under vacuum. The crude residue was purified over silica gel (100-200 M, 20% EtOAc-Hexane) to get the desired product (0.53 g, 74%).