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1.3- Dimethyl-2,4-dioxopyrimidin nitrate

To prepare fervenulin 4-oxides 12 or toxoflavine 4-oxides 146, it is convenient to use the reaction of l,3-dimethyl-2,4-dioxopyrimidin-6-yl hydrazone 147 or N-(3-methyl-2,4-dioxopyiimidin-6-yl) iV-methylhydrazone 148 with potassium nitrate in acetic acid [75CPB1885,76CPB338,76JCS(CC)658,82JHC1309,93CPB362]. Diethyl azodicarboxylate can be used instead of potassium nitrate [76JCS(P1 )713]. [Pg.295]

See also in sourсe #XX -- [ Pg.82 , Pg.295 ]

See also in sourсe #XX -- [ Pg.82 , Pg.295 ]

See also in sourсe #XX -- [ Pg.82 , Pg.295 ]

See also in sourсe #XX -- [ Pg.82 , Pg.295 ]

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1.3- Dimethyl-2,4-dioxopyrimidin

2.4- Dioxopyrimidine