2-Amino-4,6-dimethoxypyrimidine → HCID 13937618, compound

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Reaction Steps

A solution of the sulfonyl isocyanate from Example 16 (approximately 1.3 g) and 0.56 g of 4,6-dimethoxy-2-aminopyrimidine in 6 ml methylene chloride was stirred overnight at room temperature. The reaction mixture was then filtered and the filtrate concentrated in vacuo. Trituration of the residue was warm n-butyl chloride/ethyl acetate gave a cream-colored solid. The yield of the title compound, m.p. 175°-180°, was 1.1 g; IR(nujol): 1720, 1730 cm-1 ; NMR(CDCl3 /DMSO-d6): δ 2.8 (6H, s, SO2N(CH3)2), 3.7-4.0 (9H, s, CO2CH3 and OCH3 's), 5.8-6.0 (3H, two singlets, --CH2 -- and heterocyclic ring H), 7.55-8.4 (3H, m), 10.5 (1H, br s, NH), 12.5 (1H, br s, NH).

Provenance & Evidence