Cascade and stepwise oxidation of 4-phenyl- and 4-(γ-pyridyl)tetrahydropyridines
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Anatoly T. Soldatenkov , Ayalew W. Temesgen , Ives A. Bekro , Svetlana A. Soldatova and Boris N. Anissimov
Abstract
A general cascade and stepwise oxidation scheme for 4-aryl-substituted 1,2,3,6-tetrahydropyridines with KMnO4 is described, which includes the consecutive oxidative transformation of the carbon triad in the substrate allylamine fragment, yielding tetrahydropyridin-2-ones, 3,4-dihydroxypiperidin-2-ones and, finally, 1-formylamino-3-arylpropan-3-ones.