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Different 4-substituted 1,4-dihydropyridines have been oxidized to pyridine derivatives by n-butyltriphenyl phosphonium peroxodisulfate in acetonitrile solution at reflux condition.Formation of two kinds of products has been observed depending on the type of 4-substituent.
Different 4-substituted 1,4-dihydropyridines have been oxidized to pyridine derivatives by n-butyltriphenyl phosphonium peroxodisulfate in acetonitrile solution in reflux condition. Formation of two kinds of products has been observed depending on the type of 4-substituent.