反应详情

温度

75 °C

4-({[tert-Butyl(dimethyl)silyl]oxy}methyl)-6-ethylpyridin-2-amine 12-1 (0.159 g, 0.60 mmol) was dissolved in 2 mL THF. 2-Chloro-1,3-thiazole-5-carbonitrile (0.103 g, 0.72 mmol) and sodium hydride (60% dispersion in mineral oil) (0.057 g, 2.38 mmol) were added and the solution was heated to 75° C. After 4 hours more 2-chloro-1,3-thiazole-5-carbonitrile (0.043 g, 0.30 mmol) and sodium hydride (0.014 g, 0.60 mmol) were added. After 5.5 hours more 2-chloro-1,3-thiazole-5-carbonitrile (0.086 g, 0.60 mmol) and sodium hydride (0.029 g, 1.19 mmol) were added. After 8.5 hours the solution was allowed to cool to room temperature. H2O was added and the reaction was concentrated in vacuo (to remove THF). 1N HCl was added to adjust to neutral pH. The resulting precipitate was filtered and washed with water to afford the desired compound 12-2 as a yellow solid. 1H NMR (DMSO-d6) δ 12.23 (s, 1H), 8.25 (s, 1H), 6.70 (s, 1H), 6.83 (s, 1H), 4.73 (bs, 2H), 2.79 (q, 2H, J=7.63 Hz), 1.32 (t, 3H, J=7.63 Hz), 0.94 (s, 9H), 0.10 (s, 6H).

1. temperatureto cool to room temperature
2. concentrationthe reaction was concentrated in vacuo (to remove THF)
3. addition1N HCl was added
4. filtrationThe resulting precipitate was filtered
5. washwashed with water