反应详情

To a mixture of 5-bromopyrimidine-4-carboxylic acid (0.3 g, 1.478 mmol) in DMF (3 mL) were added HOBt (0.260 g, 1.921 mmol), EDC (0.397 g, 2.069 mmol), methanamine HCl (0.200 g, 2.96 mmol), followed by N-ethyl-N-isopropylpropan-2-amine (0.772 mL, 4.43 mmol). The reaction mixture was stirred for 18 hours at room temperature. The crude residue was purified by preparative HPLC (Waters SunFire C18, 5 μm, 30 mm ID×75 mm column) eluting with 5% ACN (containing 0.035% TFA) in water (containing 0.05% TFA) to give the title compound as a light brown solid (0.11 g, 35%). ESI-MS m/z [M+H]+ calc'd for C6H7BrN3O, 216.0. found 216.0.

1. customThe crude residue was purified by preparative HPLC (Waters SunFire C18, 5 μm, 30 mm ID×75 mm column)
2. washeluting with 5% ACN (containing 0.035% TFA) in water (containing 0.05% TFA)