反应详情

To a solution of 2,4,6-trichloro-1,3,5-triazine (10 g) in acetone (210 mL) was added a solution of 2,2,2-trifluoroethanol (5.97 g) and 2,4,6-collidine (7.88 mL) in acetone (210 mL) dropwise over 1 hour. The resulting mixture was stirred at room temperature for 16 hours. All the solvents were removed under vacuum to give a residue which was diluted with NMP (100 mL) and ethyl 4-aminobenzoate (9.85 g), iPr2NEt (28.4 mL) were added. After stirring at room temperature for 6 hours, 4-(aminomethyl)phenol (7.35 g) was added. The resulting mixture was stirred for 16 hours at room temperature. The mixture was diluted with 300 mL of water and extracted with EtOAc (2×500 mL). The organic layers were combined, washed with brine (300 mL), dried over MgSO4 and concentrated. The residue was purified by recrystallization in MeOH to give ethyl 4-(4-(4-hydroxybenzylamino)-6-(2,2,2-trifluoroethoxy)-1,3,5-triazin-2-ylamino)benzoate (13.6 g).

1. customAll the solvents were removed under vacuum
2. customto give a residue which
3. additionwere added
4. stirringAfter stirring at room temperature for 6 hours
5. stirringThe resulting mixture was stirred for 16 hours at room temperature
6. extractionextracted with EtOAc (2×500 mL)
7. washwashed with brine (300 mL)
8. dry with materialdried over MgSO4
9. concentrationconcentrated
10. customThe residue was purified by recrystallization in MeOH