反应详情

Phosphorus oxychloride (1.94 mL, 1 equiv) and α-naphthol (Aldrich, 3 g, 1 equiv) were stirred in anhydrous diethyl ether (20 mL). Anhydrous triethylamine was added (2.90 mL, 1 equiv) at −78° C. and the solution was allowed to warm to room temperature after 25 min. The triethylamine hydrochloride salt was filtered off and the solvent was removed under reduced pressure to give a clear pale yellow oil (4.88 g, 90%).

1. filtrationThe triethylamine hydrochloride salt was filtered off
2. customthe solvent was removed under reduced pressure