Azobisisobutyronitrile → HCID 86631566, compound

Participants

Reaction Steps

To a solution of 3-(3-chloro-4-methylphenyl)-5-(3,5-dibromo-4-fluorophenyl)-5-trifluoromethyl-4,5-dihydroisoxazole (1.1 g) in 1,2-dichloroethane (7 mL) was added N-bromosuccinimide (0.38 g) and 2,2′-azobis(2-methylpropionitrile) (0.028 g). The mixture was heated to reflux for 3 hours and then cooled to room temperature. The resulting mixture was diluted with 1,2-dichloroethane (10 mL), washed with water (30 mL) and brine, dried over anhydrous sodium sulfate and concentrated under reduced pressure to provide a residue. The residue was dissolved in N,N-dimethylformamide (7 mL), and potassium phthalimide (0.40 g) was added. The mixture was stirred at room temperature for 15 hours. The reaction mixture was then poured into water (10 mL) and extracted with ethyl acetate (10 mL×2). The organic extracts were combined, washed with brine, dried over anhydrous magnesium sulfate and concentrated under reduced pressure to afford the crude title compound as a pale yellow resin (0.75 g), which was used in the next step without purification.

Provenance & Evidence