Methyl morpholine oxide → HCID 53235480, compound

Participants

Reaction Steps

To a mixture of 5,5-dimethyl-3-(3-phenyl-4-(trifluoromethyl)isoxazol-5-yl)-7-vinyl-4,5-dihydronaphtho[1,2-c]isoxazole (Preparation 1E, 0.036 g, 0.082 mmol) and NMO in water (0.017 mL, 0.082 mmol) in THF (1.5 mL) at room temperature was added osmium tetroxide in water (0.013 mL, 1.65 μmol). The reaction mixture was stirred at room temperature for 7 hours. A solution of sodium periodate (0.026 g, 0.124 mmol) in water (1 mL) was added via syringe. The resulting cloudy reaction mixture was stirred overnight at room temperature concentrated under reduced pressure, and the residue was diluted with ethyl acetate (30 mL) and washed with water (15 mL). The organic layer was washed with brine and dried over anhydrous sodium sulfate. Concentration under reduced pressure afforded 5,5-dimethyl-3-(3-phenyl-4-(trifluoromethyl)isoxazol-5-yl)-4,5-dihydronaphtho[1,2-c]isoxazole-7-carbaldehyde (0.034 g, 0.078 mmol, 94% yield) as a tan solid. The product had an HPLC ret. time=3.51 min. (condition A); LC/MS M+1=439.1.

Provenance & Evidence