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1.3- Dimethyl-2,4-dioxopyrimidin

Similarly treatment of isothiocyanates 2, 30, and 31 with 6-hydrazino-1,3-dimethyluracil (113) in acetonitrile solution yielded JV-glycosyl-2-(1,3-dimethyl-2,4-dioxopyrimidin-6-y lhydrazino)thiocarboxamides 114-... [Pg.110]

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]

The ring opening of the isoxazole part of isoxazolo[3,4-malonic acid derivatives (XCH2Y) is supposed to give the corresponding (l,2,3,4-tetrahydro-6-(hydroxyamino)-l,3-dimethyl-2,4-dioxopyrimidin-5-yl)methylenemalonic acid derivatives, which cyclize via one of the groups X or Y to yield l,3-dimethylpyrido[2,3-d]-pyrimidine-2,4(1 /f,3//)-dione 8-oxides.306... [Pg.136]

See other pages where 1.3- Dimethyl-2,4-dioxopyrimidin is mentioned: [Pg.135]    [Pg.135]   
See also in sourсe #XX -- [ Pg.6 ]

See also in sourсe #XX -- [ Pg.6 ]

See also in sourсe #XX -- [ Pg.6 ]

See also in sourсe #XX -- [ Pg.6 ]



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1.3- Dimethyl-2,4-dioxopyrimidin hydrazone, reaction with potassium

1.3- Dimethyl-2,4-dioxopyrimidin nitrate

2.4- Dioxopyrimidine

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