Sodium borohydride → HCID 118998220, Verbindung

Reaktionsgleichung

[BH4-].[Na+].[CH3:3][C:4]1([CH3:15])[CH2:9][C:8](=[O:10])[CH2:7][CH2:6][CH:5]1[C:11]([O:13][CH3:14])=[O:12]>CO.O>[OH:10][CH:8]1[CH2:7][CH2:6][CH:5]([C:11]([O:13][CH3:14])=[O:12])[C:4]([CH3:15])([CH3:3])[CH2:9]1

Komponenten

Versuchsvorschrift

Sodium borohydride (6.19 g, 163 mmol) was added in portions at 0° C. to a solution of methyl 2,2-dimethyl-4-oxocyclohexanecarboxylate (10.0 g, 54.3 mmol) in methanol (200 mL). The mixture was stirred at room temperature for 30 minutes. Then the mixture was diluted with water and extracted with ethyl acetate. The organic layer was dried over sodium sulfate, filtered, and concentrated under reduced pressure to give methyl 4-hydroxy-2,2-dimethylcyclohexanecarboxylate. 1H NMR (400 MHz, CDCl3): δ 3.89-3.84 (m, 1H), 3.65 (s, 3H), 2.21 (s, 1H), 1.79-1.73 (m, 1H), 1.70-1.68 (m, 3H), 1.49-1.35 (m, 2H), 1.06 (s, 6H).