反应详情

A solution of 5-bromo-2-chloropyrimidine (3.87 g, 20 mmol) and cyclopropylamine (5.7 g, 0.1 mol) in 20 mL THF was heated at 65° C. for 5 hrs in a sealed tube. The mixture was evaporated in vacuo, to the residue ethanol was added, after filtration, the cake was washed with ethanol to give 4.07 g product as a colorless solid (95.5%). 1H NMR (300 MHz, CDCl3) δ: 8.32 (2 H, s), 5.58 (1 H, brs), 2.72 (1 H, brs), 0.82-0.84 (2 H, m), 0.54 (2 H, brs). LCMS: m/z [M+H]+ 214.0011.

1. customThe mixture was evaporated in vacuo, to the residue ethanol
2. additionwas added
3. filtrationafter filtration
4. washthe cake was washed with ethanol