Syntheses and unusual spectroscopic properties of novel ketobacteriopurpurins
Nuclear Overhauser enhancement experiments show that migratory attitudes of alkyl groups in various vic-dihydroxybacteriopurpurins are different for individual stereoisomers. Long wavelength absorption maxima of ketobacteriopurpurins obtained from pinacol-pinacolone rearrangements of the corresponding diols are influenced by the position of the keto group in the macrocycle; differences in these maxima are diminished by introduction of electron-withdrawing substituents.
Publication Source (Journal or Book title)
Kozyrev, A., Pandey, R., Medforth, C., Zheng, G., Dougherty, T., & Smith, K. (1996). Syntheses and unusual spectroscopic properties of novel ketobacteriopurpurins. Tetrahedron Letters, 37 (6), 747-750. https://doi.org/10.1016/0040-4039(95)02308-9