反应详情

To (5-bromo-6-fluoro-pyridin-2-yl)-(4-chloro-benzyl)-amine (537, 2.76 g, 8.75 mol) in tetrahydrofuran (90.0 mL), under an atmosphere of nitrogen at −78° C., n-butyllithium (2.50 M in hexane, 3.64 mL) was added slowly. After 60 minutes, 1,2-bis-(chloro-dimethyl-silanyl)-ethane (0.942 g, 4.38 mol) in tetrahydrofuran (8.0 mL) was added to the reaction. The reaction mixture was allowed to stir at room temperature for 2 hours. The reaction was cooled to −78° C., followed by addition of tert-butyllithium (1.70 M in hexane, 10.50 mL). The reaction was stirred for 30 minutes, followed by addition of 0.65 M of CuCN.2LiCl in tetrahydrofuran (14.0 mL). The reaction was stirred at −35° C. for 10 minutes, followed by addition of 5-chloro-3-chloromethyl-pyrrolo[2,3-b]pyridine-1-carboxylic acid tert-butyl ester (535, 1.70 g, 5.64 mol, prepared as described in Example 49, Scheme 164) in tetrahydrofuran (10.0 mL). The reaction was allowed to warm to room temperature for 1 hour and 2 N HCl (30 mL) was added to the reaction mixture, then stirred for 30 minutes. The reaction was poured into aqueous ammonia and extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated and purified with silica gel column chromatography eluting with 30% ethyl acetate in hexane to give the desired compound (P-0132, 0.75 g, 33.1%). MS (ESI) [M+H+]+=401.1.

1. temperatureThe reaction was cooled to −78° C.
2. stirringThe reaction was stirred for 30 minutes
3. stirringThe reaction was stirred at −35° C. for 10 minutes
4. temperatureto warm to room temperature for 1 hour
5. stirringstirred for 30 minutes
6. extractionextracted with ethyl acetate
7. dry with materialThe organic layer was dried over anhydrous sodium sulfate
8. filtrationfiltered
9. concentrationThe filtrate was concentrated
10. custompurified with silica gel column chromatography
11. washeluting with 30% ethyl acetate in hexane