Pyrimidines, phenyl-, nitration

Pyrimidine, 2,2,4,4,6-pentamethyl-2,3,4,5-tetrahydro-conformation, 3, 62 synthesis, 3, 118 Pyrimidine, perhydro-polymers, 1, 313-314 Pyrimidine, phenyl-nitration, 3, 78 Pyrimidine, 4-phenyl-synthesis, 3, 72, 116 Pyrimidine, 5-phenylazo-synthesis, 3, 131 Pyrimidine, 4-phenyI-6-styryl-1-oxide... 

Pyrimidin-2-amine, 4-ethyI-5-(2 -hydroxy-4 -nitrophenyI)-6-methyl-synthesis, 3, 121 Pyrimidin-2-amine, 4-methyl-basic pXj, 3, 61 Pyrimidin-2-amine, N-methyl-hydrolysis, 3, 84 synthesis, 3, 135 Pyrimidin-2-amine, 5-nitro-basic pXj, 3, 61 hydrolysis, 3, 84 Pyrimidin-2-amine, 4-phenyl-synthesis, 3, 109 Pyrimidin-2-amine, 5-phenyl-nitration, 3, 78... 

Imidazo[4,5-c]pyridin-4(5H)-ones chlorination, 5, 621 Imidazo[ 1,2-a]pyrimidine, 2-phenyl-nitration, 5, 627... 

Condensation of 6-amino-5-nitrosouracils with ethanethiol and phenyl-methanethiol leads to formation of 8-substituted xanthines and 1,2,5-thiadiazolo[3,4-t/]pyrimidines [75JCS(P1) 1857]. Oxidation with lead tetraacetate forms furazano[3,4-with sodium nitrite or potassium nitrate and subsequent heating in DMF [73JHC415, 73JHC993 76JCS(P 1) 1327] (Scheme 65). 

The synthesis of (LVII) is accomplished by formylation of p-(acetamido-phenyl)acetonitrile, followed by conversion to the methoxymethylene derivative with diazomethane, condensation with thiourea to give 2-mercapto-4-amino-5-(p-acetamidophenyl)pyrimidine, and oxidation by peroxide, followed by hydrolysis in base to produce (LVII) [347]. Alternatively, 5-phenylcytosine can be nitrated and reduced [348]. 

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