反应详情

A solution of 3.0 grams of 2-hydroxy-5-(4'-fluorophenyl)-benzoic acid in 12 ml. of pyridine and 8 ml. of acetic anhydride is heated on a steam bath for 20 minutes. The mixture is then poured onto ice and the product extracted with methylene chloride. The methylene chloride solution is dried and then evaporated. The residue is recrystallized from benzene to yield 2-acetoxy 5-(4'-fluorophenyl)-benzoic acid (m.p. 134° - 137° C.).

1. additionThe mixture is then poured onto ice
2. extractionthe product extracted with methylene chloride
3. dry with materialThe methylene chloride solution is dried
4. customevaporated
5. customThe residue is recrystallized from benzene