Methanol → tert-Butyl 3-(3-benzyloxypropyl)-6-[3-(2,2-dimethylpropyl)cyclobutyl]-4-methoxyimino-5-hexynoate

Beteiligte Stoffe

Reaktionsschritte

tert-Butyl 3-(3-benzyloxypropyl)-6-[3-(2,2-dimethylpropyl)cyclobutyl]-4-oxo-5-hexynoate (3.44 g) and methanol (35 mL) were mixed. To the mixture were added sodium sulfate (2.15 g), pyridine (3.5 mL) and O-methylhydroxylammonium chloride (1.26 g). The mixture was stirred at RT overnight. The mixture was then filtered, and the filtrate was concentrated in vacuo. To the resultant residue was added water, and the mixture was extracted with ethyl acetate. The organic layer was washed with water and brine, then dried over magnesium sulfate. The magnesium sulfate was filtered off and the filtrate was concentrated in vacuo. To the resultant residue was added silica gel (5 g), and the mixture was stirred at RT for 10 min. The silica gel was filtered off and the filtrate was concentrated in vacuo to give the title compound (3.38 g) as a crude product.

Herkunft & Nachweise