反应详情

温度

0 °C

To a solution of tert-butyl 4-(1-(5-cyanobenzo[d]oxazol-2-yl)-1-hydroxyethyl)-5-methoxy-7-methyl-1H-indole-1-carboxylate (250 mg, 0.559 mmol) in DMF (5.7 mL) at 0° C. was added successively MeI (0.105 mL, 1.676 mmol) and NaH (60% in mineral, 33.5 mg, 0.838 mmol). The reaction mixture was stirred at 0° C. for 1.5 h. The reaction mixture was quenched with 4 mL of saturated aq. solution of ammonium chloride and diluted with water and EtOAc. The layers were separated and the aqueous layer was extracted with EtOAc. The combined organic layers were dried over MgSO4, filtered and concentrated. The resulting residue was purified by flash chromatography (0-30% EtOAc:heptanes) to obtain the title compound. 1H NMR (400 MHz, DMSO-d6) δ ppm 8.43 (dd, J=1.52, 0.63 Hz, 1H) 7.79-7.97 (m, 2H) 7.63 (d, J=3.79 Hz, 1H) 7.05 (d, J=3.79 Hz, 1H) 6.83 (s, 1H) 3.23 (s, 3H) 3.17 (s, 3H) 1.81-2.08 (m, 3H) 1.60 (s, 9H).

1. customThe reaction mixture was quenched with 4 mL of saturated aq. solution of ammonium chloride
2. additiondiluted with water and EtOAc
3. customThe layers were separated
4. extractionthe aqueous layer was extracted with EtOAc
5. dry with materialThe combined organic layers were dried over MgSO4
6. filtrationfiltered
7. concentrationconcentrated
8. customThe resulting residue was purified by flash chromatography (0-30% EtOAc:heptanes)