反应详情

温度

0 °C

To a suspension of sodium hydride (17.6 g, 733 mmol) in dry N,N-dimethylformamide (DMF) at 0° C. was added dropwise t-butyl cyanoacetate (96 g, 680 mmol). The tan suspension was stirred at 0° C. for 0.5 hours then 2-amino-4,6-dichloropyrimidine (58.7 g, 358 mmol) was added batchwise. The mixture was heated slowly to 90° C. and the reaction was held at 90° C. for 18 hours. The reaction mixture was poured onto water (1 l) and the mixture was filtered. The filtrate was acidified with con HCl to pH 6 and the resultant solid was filtered and washed with water and hexanes and dried to furnish 99.64 g of the desired subject as a green powder, m.p. 107°-109° C. NMR (200 mHz) D6-acetone δ 12.8 (bs, 1 H), 8.0 (bs, 1 H), 7.8 (bs, 1 H), 6.3 (s, 1 H), 1.5 (s, 9 H).

1. temperatureThe mixture was heated slowly to 90° C.
2. waitthe reaction was held at 90° C. for 18 hours
3. additionThe reaction mixture was poured onto water (1 l)
4. filtrationthe mixture was filtered
5. filtrationthe resultant solid was filtered
6. washwashed with water and hexanes
7. customdried
8. customto furnish 99.64 g of the