反应详情

温度

100 °C

To a solution of 4,6-dichloro-nicotinic acid ethyl ester (2 g, 9 mmol) and 3-(indan-5-ylamino)-propionic acid ethyl ester (from Example 1 (A), 2.3 g, 10 mmol) in 5 mL of DMF was added triethylamine (2 g, 20 mmol). The mixture was stirred at 100° C. for 48 hours. The reaction was cooled, quenched with water, and extracted 3 times with EtOAc. The organic layer was dried over Na2SO4 and concentrated in vacuo. Flash chromatography (EtOAc/Hexanes, 2:10 v/v) afforded the title compound as a white solid (1.6 g, 44%). 1H NMR (400 MHz, CDCl3) δ (ppm): 8.22 (s, 1H), 7.15 (d, J=8.0 Hz, 1H), 6.92 (s, 1H), 6.85 (m, 2H), 4.03-4.15 (m, 4H), 3.74 (q, J=7.1 Hz, 2H), 2.85 (t, J=7.4 Hz, 4H), 2.64 (m, 2H), 2.07 (m, 2H), 1.23 (t, J=7.1 Hz, 3H), 1.08 (t, J=7.1 Hz, 3H).

1. temperatureThe reaction was cooled
2. customquenched with water
3. extractionextracted 3 times with EtOAc
4. dry with materialThe organic layer was dried over Na2SO4
5. concentrationconcentrated in vacuo