反应详情

To a suspension, stirred at 20° C., of 1.5 g (4.43 mmol) of 5-trifluoromethyl-1-[(3-fluoro-phenyl)methyl]-1H-pyrrolo[2,3-b]pyridine-2-carboxylic acid (WO 2008/093024) in 40 mL of dry toluene are added 3.2 mL (44.34 mmol) of thionyl chloride. The reaction mixture is stirred at reflux for 2 hours and then concentrated under reduced pressure. The resulting product is taken up in 20 mL of dichloromethane and this solution is poured dropwise into a solution of 5.81 mL (44.34 mmol) of 30% aqueous ammonia. The reaction mixture is stirred for 14 hours at 20° C. After this time, a solid is collected by filtration, and is triturated in 50 mL of diisopropyl ether. After filtering off and drying under reduced pressure, 1.5 g of the expected product are collected.

1. temperatureat reflux for 2 hours
2. concentrationconcentrated under reduced pressure
3. stirringThe reaction mixture is stirred for 14 hours at 20° C
4. filtrationAfter this time, a solid is collected by filtration
5. customis triturated in 50 mL of diisopropyl ether
6. filtrationAfter filtering off
7. dry with materialdrying under reduced pressure, 1.5 g of the expected product
8. customare collected