Russian Chemical Bulletin

Unusual aluminum chloride-assisted conversion of isopropenyl acetate into 3-acetyl-and 3, 5-diacetyl-2, 6-dimethyl-4H-pyran-4-ones

VL Novikov, OP Shestak, VA Denisenko

Index: Novikov; Shestak; Denisenko Russian Chemical Bulletin, 2010 , vol. 59, # 8 p. 1600 - 1604

Full Text: HTML

Citation Number: 2

Abstract

Abstract Reflux of isopropenyl acetate with an excess of AlCl 3 in 1, 2-dichloroethane affords 3, 5-diacetyl-2, 6-dimethyl-4 H-pyran-4-one in 17% yield. The mild acidic cleavage of the latter (2% HCl, 20° C, 16 h) gives 3-acetyl-2, 6-dimethyl-4 H-pyran-4-one in 87% yield,