反应详情

温度

90 °C

2 M aqueous Na2CO3 solution (8.26 mL) is added to a mixture of 4-[(6-bromo-pyridine-3-carbonyl)-cyclopropyl-amino]-piperidine-1-carboxylic acid tert-butyl ester (500 mg) and 4-(methanesulfonyl)phenylboronic acid (259 mg) in N,N-dimethylformamide (5 mL). The mixture is sparged with argon for 10 min and [1,1′-bis(diphenylphosphino)-ferrocene]dichloropalladium dichloromethane complex (96 mg) is added. The resulting mixture is stirred for 6 h at 90° C. After cooling to room temperature, water (50 mL) is added and the aqueous phase is extracted with ethyl acetate. The organic phase is dried over MgSO4, the solvent is evaporated, and the residue is chromatographed on silica gel (ethyl acetate/cyclohexane 3:1→1:0) to afford the title compound. LC (method 6): tR=1.17 min; Mass spectrum (ESI+): m/z=500 [M+H]+.

1. customThe mixture is sparged with argon for 10 min
2. addition[1,1′-bis(diphenylphosphino)-ferrocene]dichloropalladium dichloromethane complex (96 mg) is added
3. temperatureAfter cooling to room temperature
4. additionwater (50 mL) is added
5. extractionthe aqueous phase is extracted with ethyl acetate
6. dry with materialThe organic phase is dried over MgSO4
7. customthe solvent is evaporated
8. customthe residue is chromatographed on silica gel (ethyl acetate/cyclohexane 3:1→1:0)