Nitric Acid → HCID 178433493, compound

Participants

Reaction Steps

Powdered 4,6-dihydroxy-2-methylpyrimidine (9 g, 71 mmol) was dissolved in trifluoroacetic acid (54 mL). The reaction mixture was cooled in ice-water as nitric acid (4.3 mL) was added dropwise over a period of 30 minutes. During addition the internal temperature was maintained below 15° C. After the addition, the cooling was removed and the reaction stirred overnight. Water (50 mL) was added to the reaction mixture and the resulting solid was filtered and dried under vacuum to obtain 2-methyl-5-nitropyrimidine-4,6-diol (5.8 g). 1H NMR (400 MHz, DMSO-d6): δ 12.97 (br, 2H), 2.32 (s, 3H). MS (m/z) 172 (M+1).

Provenance & Evidence