SCHEDULED MAINTENANCE
The dye-sensitised photo-oxygenation of 2,5-dimethylpyrrole in methanol yields the dealkylation products 5-methoxy-5-methyl-Δ3-pyrrolin-2-one and 5-methoxy-5-methoxymethyl-Δ3-pyrrolin-2-one in addition to the surprising structure, 2-formyl-2-methoxy-5-methylidene-Δ3-pyrroline; similar photo-oxidation of 2-methylpyrrole gives 5-methoxy-5-methyl-Δ3-pyrrolin-2-one as the major product.
L. K. Low and D. A. Lightner, J. Chem. Soc., Chem. Commun., 1972, 116 DOI: 10.1039/C39720000116
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