Benzene, 1-chloro-3-isocyanato- → 4-amino-N-(3-chlorophenyl)-5-fluoro-2-oxopyrimidine-1(2H)-carboxamide

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Reaction Steps

Using the procedure of Example 5 but using tetrahydrofuran (THF) instead of DMF as solvent, 4-amino-5-fluoro-pyrimidin-2-ol (0.25 g, 1.94 mmol) and 3-chlorophenyl isocyanate (0.260 mL, 2.13 mmol) were reacted to yield 4-amino-N-(3-chlorophenyl)-5-fluoro-2-oxopyrimidine-1(2H)-carboxamide (0.45 g, 82%) as a white solid: mp 250-252° C.; 1H NMR (300 MHz, DMSO-d6) δ 12.82 (s, 1H), 8.65 (s, 1H), 8.43 (d, J=7.3 Hz, 1H), 8.35 (s, 1H), 7.29-7.20 (m, 2H), 7.06 (d, J=7.4 Hz, 1H), 6.71 (d, J=8.4 Hz, 1H); ESIMS m/z 280.9 ([M−H]−).

Provenance & Evidence