反应详情

温度

25 °C

To a solution of (4-tert-butoxycarbonylamino-phenyl)-acetic acid (0.825 mmol) and crude 5,6-diamino-1,3-dimethyl-1H-pyrimidine-2,4-dione (0.75 mmol) in N,N-dimethylformamide (3 mL) under argon at 25° C. was added 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride(0.825 mmol) and 4-dimethylaminopyridine (0.15 mmol). The reaction was stirred at 25° C. for 18 h. At this time, the reaction was concentrated in vacuo. The residue was triturated with water and the resulting solid collected by filtration, washed well with water and dried in vacuo to afford crude {4-[(6-amino-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydro-pyrimidin-5-ylcarbamoyl)-methyl]-phenyl}-carbamic acid tert-butyl ester as a light beige solid which was of sufficient purity for subsequent use without additional purification (87%).

1. concentrationAt this time, the reaction was concentrated in vacuo
2. customThe residue was triturated with water
3. filtrationthe resulting solid collected by filtration
4. washwashed well with water
5. customdried in vacuo