反应详情

To a solution of the resulting 6-amino-N-(4-benzyloxy-benzyl)-nicotinamide (200 mg, 0.556 mmol) in ethanol (10 mL) were added 5,5-dimethylimidazophospho-2,4-dione (85 mg, 0.66 mmol) and 37% formaldehyde aqueous solution (1 mL), and the solution was stirred for 1 hour under reflux. Water and ethyl acetate were added to the reaction solution, which was then partitioned, and the organic layer was washed twice. NH silica gel was added to the organic layer, the solvent was evaporated in vacuo for adsorption, purification was carried out by NH silica gel column chromatography (ethyl acetate), and the title compound (95 mg, 0.243 mmol, 40%) was obtained as a white solid.

1. temperatureunder reflux
2. customwas then partitioned
3. washthe organic layer was washed twice
4. additionNH silica gel was added to the organic layer
5. customthe solvent was evaporated in vacuo for adsorption, purification