反应详情

A mixture of 5-hydroxy-N-(3-(trifluoromethyl)phenyl)-1H-indole-1-carboxamide and 5-hydroxy-N-(3-(trifluoromethyl)phenyl)indoline-1-carboxamide (6:4) (3 g) is mixed with sodium hydroxide (0.45 g, 11.2 mmol) and 2,4-dichloropyrimidine (1.68 g, 11.2 mmol) in 50 mL of acetone and 50 mL of water at 0° C. and stirred for 1.5 h. Additional sodium hydroxide (0.075 g, 1.88 mmol) and (0.279 g, 1.88 mmol) are added. After additional 30 min stirring the reaction is concentrated, diluted with EtOAc, washed with water and brine before the organic layer is dried over sodium sulfate and concentrated. The residue is separated via FCC (5-50% EtOAc in heptane) to give 5-(2-chloropyrimidin-4-yloxy)-N-(3-(trifluoromethyl)phenyl)-1H-indole-1-carboxamide. 1H NMR (400 MHz, CDCl3) δ ppm 8.45 (d, J=5.7 Hz, 1 H), 8.24 (d, J=9.0 Hz, 1 H), 7.86 (s, 1 H), 7.78 (d, J=8.2 Hz, 1 H), 7.60 (d, J=3.7 Hz, 1 H), 7.55 (t, J=8.0 Hz, 1 H), 7.45-7.50 (m, 2 H), 7.42 (d, J=2.1 Hz, 1 H), 7.15 (dd, J=8.9, 2.3 Hz, 1 H), 6.82 (d, J=5.7 Hz, 1 H), 6.73 (dd, J=3.7, 0.6 Hz, 1 H).

1. stirringAfter additional 30 min stirring the reaction
2. concentrationis concentrated
3. additiondiluted with EtOAc
4. washwashed with water and brine before the organic layer
5. dry with materialis dried over sodium sulfate
6. concentrationconcentrated
7. customThe residue is separated via FCC (5-50% EtOAc in heptane)