反应详情

温度

25 °C

A mixture of 4,6-dichloro-2-methylpyrimidine (Aldrich) (1.45 g, 8.90 mmol), 4-methoxybenzylamine (Alfa Aesar) (1.278 mL, 9.78 mmol), and triethylamine (1.488 mL, 10.67 mmol) in DMF (10.0 mL) was stirred at 25° C. for 18 h. The resulting mixture was partitioned between EtOAc (300 mL) and half-saturated aqueous NaHCO3 (80 mL). The organic layer was separated, sequentially washed with water (2×80 mL) and brine (80 mL), dried over sodium sulfate, filtered, and concentrated in vacuo. Chromatographic purification of the residue (ISCO, 120 g, 0 to100% EtOAc/Hexanes) furnished 6-chloro-N-(4-methoxybenzyl)-2-methylpyrimidin-4-amine (2.30 g, 8.72 mmol, 98% yield) as an off-white solid. 1H NMR (400 MHz, CDCl3) δ 7.23 (d, J=8.41 Hz, 2H); 6.89 (d, J=8.61 Hz, 2H); 6.18 (s, 1H); 4.42 (br. s., 2H); 3.81 (s, 3H); 2.50 (s, 3H). m/z (ESI, +ve ion) 264.1 (M+H)+.

1. customThe resulting mixture was partitioned between EtOAc (300 mL) and half-saturated aqueous NaHCO3 (80 mL)
2. customThe organic layer was separated
3. washsequentially washed with water (2×80 mL) and brine (80 mL)
4. dry with materialdried over sodium sulfate
5. filtrationfiltered
6. concentrationconcentrated in vacuo
7. customChromatographic purification of the residue (ISCO, 120 g, 0 to100% EtOAc/Hexanes)