反应详情

温度

75 °C

To a solution of (S)-3-amino-1-[(1S,2R,4R)-4-(isopropyl(methyl)amino)-2-propylcyclohexyl]pyrrolidin-2-one (7.0 mmol) in EtOH (23 mL) was added triethylamine (2.5 mL, 17.5 mmol) and 4-chloro-6-(trifluoromethyl)quinazoline (2.03 g, 8.75 mmol). The mixture was heated at 75° C. for 14 h and then concentrated in vacuo. [Note: on smaller reaction scales, this residue could be diluted in water/acetonitrile, filtered, and purified directly by RP-HPLC.] The residue was dissolved in 60 mL of 2:1 H2O/AcOH and extracted with Et2O twice. The aqueous phase was basified to pH 14 with solid NaOH (the temperature of this exothermic process was controlled through the intermittent use of an external ice bath) and then extracted with EtOAc thrice. The organic extracts were combined, washed with brine, dried (Na2SO4), filtered, and concentrated in vacuo to give a solid. The material was recrystallized from EtOAc twice to provide the title compound, (S)-1-[(1S,2R,4R)-4-(isopropyl(methyl)amino)-2-propylcyclohexyl]-3-(6-(trifluoromethyl)quinazolin-4-ylamino)pyrrolidin-2-one, as a white microcrystalline solid (1.83 g, 52% yield). MS found: (M+H)+=492.4. [Note: Purification of the the mother liquors using RP-HPLC provided more of the title compound as its bis-TFA salt.]

1. concentrationconcentrated in vacuo
2. custom[Note: on smaller reaction scales
3. filtrationfiltered
4. custompurified directly by RP-HPLC
5. dissolution] The residue was dissolved in 60 mL of 2:1 H2O/AcOH
6. extractionextracted with Et2O twice
7. customwas controlled through the intermittent use of an external ice bath
8. extraction) and then extracted with EtOAc thrice
9. washwashed with brine
10. dry with materialdried (Na2SO4)
11. filtrationfiltered
12. concentrationconcentrated in vacuo
13. customto give a solid
14. customThe material was recrystallized from EtOAc twice