反应详情

After dissolving 0.53 g of 2-amino-4-(4-aminophenoxy)pyridine in a mixture of 20 ml of tetrahydrofuran and 10 ml of dimethylformamide, 0.36 ml of p-fluorophenyl isocyanate was added and the mixture was stirred for 1 hour. NH type silica gel was added to the reaction solution, the solvent was distilled off under reduced pressure and the reaction product was adsorbed onto the silica gel. The silica gel was charged into a dry column packed with NH type silica gel, and column purification was performed (chloroform:methanol=20:1, followed by 10:1). The solvent was distilled off under reduced pressure to obtain 610 mg of the target substance as a white powder.

1. additionwas added
2. additionNH type silica gel was added to the reaction solution
3. distillationthe solvent was distilled off under reduced pressure
4. additionThe silica gel was charged into a dry column
5. custompacked with NH type silica gel, and column purification
6. distillationThe solvent was distilled off under reduced pressure
7. customto obtain 610 mg of the target substance as a white powder