反应详情

5-Bromo-2,4-dichloropyrimidine (5.0 g, 21.9 mmol), tetrahydro-2H-pyran-4-amine (2.22 g, 21.9 mmol), and N-ethyl-N-isopropylpropan-2-amine (4.25 g, 32.9 mmol) were dissolved in dioxane (50 ml) and the reaction was stirred at room temperature for 12 hours. Ethyl acetate was added to the reaction mixture and the organic layer was washed with water and brine. The organic layer was dried with sodium sulfate. Removal of solvent gave (5-bromo-2-chloro-pyrimidin-4-yl)-(tetrahydro-pyran-4-yl)-amine (32) as a light yellow solid (6.75 g, 99%). 1H NMR (500 MHz, CD3OD) δ ppm 8.04 (1 H, s), 4.14-4.21 (1 H, m), 3.89 (2 H, dd, J=11.4, 4.3 Hz) 3.43 (2 H, td, J=11.9, 2.0 Hz), 1.80 (2 H, ddd, J=12.6, 4.2, 1.8 Hz), 1.63 (2 H, qd, J=12.2, 4.5, Hz); LCMS-ESI (POS), M/Z, M+1: Found 292.0, Calculated 292.

1. washthe organic layer was washed with water and brine
2. dry with materialThe organic layer was dried with sodium sulfate
3. customRemoval of solvent