反应详情

To 3.29 g (16.7 mmol) 5-hydroxy-2-(tetrahydro-pyran-2-yl)-2H-pyridazin-3-one (preparation 5a) in acetonitrile is added at RT subsequently 4.63 g (33.4 mmol) potassium-carbonate and 4.20 g (16.7 mmol) 5-bromo-2-bromomethyl-pyridine. The reaction mixture is stirred 3 h at RT and 5 mL DMF is added. The reaction mixture is stirred overnight and the solvent is evaporated. To the residue water and tert-butylmethylether is added. The precipitate is collected and dried.

1. stirringThe reaction mixture is stirred overnight
2. customthe solvent is evaporated
3. additionTo the residue water and tert-butylmethylether is added
4. customThe precipitate is collected
5. customdried