Sodium Carbonate → N-(4,4-dimethylcyclohexylidene)hydroxylamine

Beteiligte Stoffe

Reaktionsschritte

To 4,4-Dimethylcyclohexanone (50 g, 396.19 mmol), NH2OH.HCl (35.84 g, 515.75 mmol) in H2O (190 mL) and ethanol (250 mL) was added a solution of Na2CO3 (54.16 g, 510.99 mmol) in water (170 mL) dropwise over a period of 20 minutes. After complete addition, reaction mixture was heated to reflux for 3h. The ethanol was evaporated, and the residue extracted into ethyl acetate (4×120 mL). The combined organic layer was washed with water (150 mL), brine (150 mL) and dried over sodium sulfate and concentrated to afford 45 g (80.4%) 4,4-dimethyl cyclohexanone oxime (I 6a) as white solid.

Herkunft & Nachweise