Reaction of 6-Methyl-6-p-tolyl-4-ethoxy-5,6-dihydro-pyran-2-one with Perchloric Acid

Article abstract of DOI:10.1007/BF00904686

6-Methyl-6-p-tolyl-4-ethoxy-5,6-dihydro-pyran-2-one(1) undergoes decarboxylative elimination with perchloric acid in ether to give 4-p-tolyl-3-penten-2-one(3), the structure of which has been confirmed through an unambiguous synthesis. - Keywords: Decarboxylative elimination, β-Keto-δ-lactone