反应详情

温度

0 °C

1.88 g (10.0 mmol) 4-(2-amino-propyl)-phenol*HCl and 1.80 g (21.0 mmol) NaHCO3 are combined in 50 mL water and cooled down to 0° C. 0.95 mL (10.0 mmol) acetic anhydride, dissolved in 50 mL ACN, are dropped into the mixture over a period of 1.5 h. The reaction mixture is stirred at r.t. for 72 h. The ACN is evaporated in vacuo and the aq. residue is acidified with HCl (1N). The mixture is extracted several times with EtOAc. The organic layers are combined, dried with Na2SO4 and the solvent is removed in vacuo. The crude product is purified by column chromatography (silica gel, DCM/MeOH 95/5).

1. additionare dropped into the mixture over a period of 1.5 h
2. customThe ACN is evaporated in vacuo
3. extractionThe mixture is extracted several times with EtOAc
4. dry with materialdried with Na2SO4
5. customthe solvent is removed in vacuo
6. customThe crude product is purified by column chromatography (silica gel, DCM/MeOH 95/5)