反应详情

温度

0 °C

To 1-(tert-butyl-dimethyl-silanyl)-3-iodo-1H-pyrrolo[2,3-b)]pyridine (66, 0.53 g, 0.0015 mol) and tetrahydrofuran (15.0 mL), under an atmosphere of nitrogen at −20° C., was added isopropylmagnesium chloride (0.78 mL, 2.0 M in tetrahydrofuran). The reaction was allowed to warm to 0° C. (around 80 minutes), then cooled to −20° C., followed by addition of (4-Chloro-benzyl)-(6-fluoro-5-formyl-pyridin-2-yl)-carbamic acid tert-butyl ester (65, 0.200 g, 0.55 mmol) in tetrahydrofuran (6.0 mL). The reaction was allowed to warm to room temperature in 1 hour, then poured into water and extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated and purified by silica gel column chromatography eluting with 20% ethyl acetate in hexane to give a yellow solid (67, 0.20 g, 61.1%). MS (ESI) [M+H+]+=597.4.

1. temperaturecooled to −20° C.
2. temperatureto warm to room temperature in 1 hour
3. extractionextracted with ethyl acetate
4. dry with materialThe organic layer was dried over anhydrous sodium sulfate
5. filtrationfiltered
6. concentrationThe filtrate was concentrated
7. custompurified by silica gel column chromatography
8. washeluting with 20% ethyl acetate in hexane
9. customto give a yellow solid (67, 0.20 g, 61.1%)