Sodium borohydride → 3-Bromo4-(N,N-dimethylsulfamoyl)benzyl alcohol
Reaktionsgleichung
[Br:1][C:2]1[CH:3]=[C:4]([CH:7]=[CH:8][C:9]=1[S:10](=[O:15])(=[O:14])[N:11]([CH3:13])[CH3:12])[CH:5]=[O:6].[BH4-].[Na+]>C1COCC1>[Br:1][C:2]1[CH:3]=[C:4]([CH:7]=[CH:8][C:9]=1[S:10](=[O:15])(=[O:14])[N:11]([CH3:13])[CH3:12])[CH2:5][OH:6]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
To a solution of OBS02001 (6.0 g, 19.47 mmol) in anhydrous THF (50 mL) was added sodium borohydride (0.81 g, 21.42 mmol). The mixture was stirred at room temperature for 4 h, quenched with water (CARE!!) and filtered through a Celite pad. The filtrate was concentrated in vacuo and re-dissolved in DCM (200 mL). The organic layer was washed with brine (2×200 mL), dried (Na2SO4) and filtered. Concentration in vacuo of the filtrates gave OBS02002 as a pale yellow oil (5.54 g, 92%). TLC [SiO2, EtOAc-n-hexane (1:1)] RF=0.47; 1H-NMR (270 MHz, CDCl3)=2.97 (6H, s), 3.14 (1H, bs, OH), 4.51 (2H, s) 7.19 (1H, dd, J=1.5, 8.1), 7.37 (1H, d, J=8.4), 7.52 (1H, d, J=1.8).