反应详情

In a flask, dl-2-allyl-3-hydroxy-4-cyclopentenone (13.8 g), toluenesulfonic acid (0.1 g) and acetic anhydride (27.6 g) were charged, and the resultant mixture was heated at 90°-100° C. for 3 hours. The reaction mixture was treated as in Example 28 to give 16.0 g of dl-3-acetoxy-2-allyl-4-cyclopentenone. Yield, 89%. B.P., 80°-85° C./0.6-1 mmHg.

1. additionThe reaction mixture was treated as in Example 28