反应详情

温度

60 °C

(2R,6R)-2-Methyl-6-(trifluoromethyl)morpholine hydrochloride (4-6, 500 mg, 2.432 mmol) and K2CO3 (739 mg, 5.35 mmol) were combined in CH3CN (10 ml) at rt. To this was added 7-(bromomethyl)-4-chloroquinoline-2-carbonitrile (2-4, 753 mg, 2.68 mmol) all at once as a solid then the mixture was heated to 60° C. overnight. The mixture was cooled to rt, diluted with H2O, and extracted with EtOAc (3×). The combined organic layers were filtered through a pad of Celite washing with EtOAc then concentrated. The crude product was subjected to silica gel chromatography (50 g, 0-10% EtOAc/hexanes, 15 minute gradient) to afford 4-chloro-7-(((2R,6R)-2-methyl-6-(trifluoromethyl)morpholino)methyl)quinoline-2-carbonitrile (4-7, 859, 96%) as a white foam. 1H NMR (400 MHz, CDCl3): δ 8.26 (d, J=8.7 Hz, 1H); 8.11 (s, 1H); 7.83 (dd, J=8.6, 1.6 Hz, 1H); 7.78 (s, 1H); 4.09-4.01 (m, 1H); 3.79 (m, 3H); 2.90 (d, J=10.9 Hz, 1H); 2.73 (d, J=11.4 Hz, 1H); 2.28-2.17 (m, 1H); 2.03-1.92 (m, 1H); 1.20 (d, J=6.2 Hz, 3H).

1. temperatureThe mixture was cooled to rt
2. extractionextracted with EtOAc (3×)
3. filtrationThe combined organic layers were filtered through a pad of Celite
4. washwashing with EtOAc
5. concentrationthen concentrated
6. customwas subjected to silica gel chromatography (50 g, 0-10% EtOAc/hexanes, 15 minute gradient)