2-Oxy-3-(pyridinium-1'-yl)-1,4-naphthoquinone betaines are obtained in moderate to good yield by oxidation of 1,4-naphthoquinones with iodine/MnO2 or hydrogen peroxide in the presence of substituted pyridines. Pyridinium-1,4-naphthoquinone iodides and 2,3-epoxy-2,3-dihydronaphthoquinone are suggested intermediates
Synthesis of 2-oxy-3-(pyridinium-1'-yl)-1,4-naphthoquinone derivatives by iodine or hydrogen peroxide oxidation of 1,4-naphthoquinones in the presence of substituted pyridines.
CITTERIO, ATTILIO;SEBASTIANO, ROBERTO;MELE, ANDREA
1997-01-01
Abstract
2-Oxy-3-(pyridinium-1'-yl)-1,4-naphthoquinone betaines are obtained in moderate to good yield by oxidation of 1,4-naphthoquinones with iodine/MnO2 or hydrogen peroxide in the presence of substituted pyridines. Pyridinium-1,4-naphthoquinone iodides and 2,3-epoxy-2,3-dihydronaphthoquinone are suggested intermediatesFile in questo prodotto:
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