Phosphorus tribromide → HCID 89656327, compound

Participants

Reaction Steps

To a solution of Example 287b (3.70 g, 11.74 mmol) in dichloromethane (20 mL) was added phosphorus tribromide (1.11 mL, 11.7 mmol) dropwise. The reaction mixture was stirred at ambient temperature for 3 hours, and poured into ice water. The pH was adjusted to basic by the careful addition of saturated aqueous sodium bicarbonate and the mixture was extracted with dichloromethane. The organic layer was washed with saturated aqueous sodium chloride, dried with anhydrous sodium sulfate, filtered, and concentrated to provide the title compound (4.15 g, 93%).

Provenance & Evidence