SPECIFIC REARRANGEMENTS OF DIHYDROPYRIMIDINEDIONES TO PYRIDONES VIA DIAZACYCLOOCTATETRAENE INTERMEDIATES

Article abstract of DOI:10.1016/S0040-4039(00)88705-5

The rearrangement of a uracil-alkyne photoadduct has been studied by (13)C- and (15)N-labeling experiments.A diazacyclooctatetraene intermediate suggested as an intermediate from these labeling studies has been independently prepared and shown to undergo rapid rearrangement to a pyridone.