SEARCH Articles Figures Tables 2- Carboxy-5-hydroxy-4-pyrone 2-Ethyl-3-hydroxy-4-pyrone 2-Pyrone 4-hydroxy-6-methyl-, alkylation 2-Pyrones 3-acyl-4-hydroxy-, reactions 3- Acetyl-4-hydroxy-6-methyl-pyron 3- Hydroxy-2-pyrone, Diels-Alder reactions 3- hydroxy-2-pyrone 3-Acetyl-2-hydroxy-6-methyl-4-pyrone 3-Hydroxy-2-methyl-4-pyrone complexes, with 3.6- dimethyl-4-hydroxy-2-pyrone 4- hydroxy-5,4-dihydro-2-pyrone 5-Hydroxy-2-hydroxymethyl-4-pyrone 5.6- Dihydro-4-hydroxy-2-pyrones 6- Hydroxy-2-pyrone, tautomerism 6-Aryl-4-hydroxy-2-pyrones 7-Pyrone, 2-methyl-3-hydroxy Acidity 4-hydroxy-2-pyrones Diels-Alder reactions of 3-hydroxy-2-pyrone Pyrone, 4-hydroxy-6-methylKnoevenagel reaction product Pyrones 4-hydroxy- from