反应详情

温度

50 °C

To a solution of 3-(3-chloro-4-isopropoxyphenyl)-5-(1H-indol-4-yl)-1,2,4-oxadiazole (0.100 g, 0.283 mmol) in DMF (0.999 ml) was added NaH (0.012 g, 0.311 mmol). After about 15 min tert-butyl 4-bromobutanoate (0.095 g, 0.424 mmol) was added and the reaction mixture was heated to about 50° C. After about 24 h the reaction mixture was cooled to ambient temperature, concentrated in vacuo and purified by chromatography on silica gel (eluting with EtOAc/Hep) to provide tert-butyl 4-(4-(3-(3-chloro-4-isopropoxyphenyl)-1,2,4-oxadiazol-5-yl)-1H-indol-1-yl)butanoate (0.135 g, 93%) as a colorless oil that solidified on standing.

1. temperatureAfter about 24 h the reaction mixture was cooled to ambient temperature
2. concentrationconcentrated in vacuo
3. custompurified by chromatography on silica gel (eluting with EtOAc/Hep)