Benzene → 4-bromo-2-chloro-1-(phenylsulfonyl)Benzene

Participants

Reaction Steps

A 500 mL round-bottomed flask was charged with 4-bromo-2-chlorobenzene-1-sulfonyl chloride (10.0 g, 34.5 mmol, Sigma-Aldrich, St. Louis, Mo.), ferric chloride (2.80 g, 17.2 mmol), and 200 mL of benzene. The mixture was heated at reflux for 12 h then diluted with water (100 mL) and extracted with CH2Cl2 (2×300 mL). The combined organic layers were dried (MgSO4) and concentrated to give a brown solid that was slurried with EtOH (100 mL) to give 4-bromo-2-chloro-1-(phenylsulfonyl)benzene (7.50 g).

Provenance & Evidence