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Beilstein J. Org. Chem. 2020, 16, 2297–2303, doi:10.3762/bjoc.16.190
Graphical Abstract
Figure 1: Model mixed enones.
Scheme 1: Quantitative photoisomerization of 1 to 2 in all types of solvents.
Scheme 2: Accepted mechanistic pathway for the photochemical transformations of 1.
Scheme 3: Photochemical reactions of 3a–g. Irradiation using a Hanovia medium pressure 450 W lamp with a pyre...
Figure 2: Enones used for this work.
Scheme 4: Synthesis of 7a,b.
Scheme 5: Photochemical reaction of 7a,b; a) solvent and conditions are given in Table 2.
Figure 3: Time-dependent absorption spectra of 10a,b in acetonitrile at rt.
Scheme 6: Conversion of ketene 10a to its methyl esters 11a,b.