反应详情

温度

60 °C

(1R)-1-[5-(3-chlorophenyl)isoxazol-3-yl]ethanol (5.40 g, 24.1 mmol) was dissolved in DMF (45 mL). To this 3-[4-methyl-5-(methylsulfonyl)-4H-1,2,4-triazol-3-yl]pyridine (5.75 g, 24.1 mmol) and cesium carbonate (10.1 g, 31.4 mmol) were added. After stirring over night at 60° C., water was added. The mixture was extracted with dichloromethane, followed by concentration of the organic layer in vacuo, to give a crude which was purified by column chromatography on silica using dichloromethane/methanol=98/2, to give the title compound (7.10 g, 77%). 1H NMR: 8.90 (d, 1H), 8.72 (m, 1H), 8.04 (dt, 1H), 7.76 (bs, 1H), 7.66 (m, 1H), 7.45 (m, 1H), 7.40 (m, 2H), 6.73 (s, 1H), 6.35 (q, 1H), 3.57 (s, 3H), 1.93 (d, 3H). 1H NMR (DMSO-d6): 8.90 (d, 1H), 8.71 (dd, 1H), 8.13 (dt, 1H), 7.99 (s, 1H), 7.86 (m, 1H), 7.58 (m, 3H), 7.40 (s, 1H), 6.19 (q, 1H), 3.54 (s, 3H), 1.81 (d, 3H). LC-MS (M++1)=382. [α]DRT (2.92 g/L, CDCl3)=−46.575°

1. extractionThe mixture was extracted with dichloromethane
2. customto give a crude which
3. customwas purified by column chromatography on silica