Boron tribromide → 2-Amino-4-(methylsulfonyl)phenol

Participants

Reaction Steps

The title compound was prepared by reacting 2-methoxy-5-methylsulfonyl aniline (5.0 g, 24.8 mmol) with boron tribromide (26 mmol, 26 mL, 1M in dichloromethane) in chloroform (30 m L) at 0 C.°. After 20 minutes, the reaction was quenched with sodium bicarbonate and the ph of the aqueous phase was adjusted to pH 7 and extracted with ethyl acetate. Concentration under reduced pressure gave 690 mg of product as an orange solid (15%).

Provenance & Evidence