反应详情

A 1 M THF solution of LiHMDS (0.762 mL, 0.762 mmol) was added dropwise to a suspension of 2,6-dichloronicotinamide (54.0 mg, 0.283 mmol) and N-(5-amino-2-(morpholine-4-carbonyl)phenyl)-N-methylmethanesulfonamide (68.2 mg, 0.218 mmol) in THF (0.5 mL) at 0° C. After 21 h at room temperature, LCMS analysis showed that the reaction was less than 50% complete. Additional portions of LiHMDS (0.054 mL) were added at 22, 23, and 24 h time points. After a total of 28 h, the mixture was quenched by saturated NH4Cl (2 mL) and extracted with EtOAc (3×2 mL). The combined extracts were loaded onto a silica gel cartridge and dried in vacuo. The dry cartridge was then connected to an ISCO cartridge and eluted with 30-100% EtOAc in hexanes, then 10% MeOH in CH2Cl2 to give a brown powder (59.3 mg, 58% yield). LCMS: (M+H)+=468.0. 1H NMR (400 MHz, DMSO-d6) δ ppm 11.50 (1H, s), 8.38 (1H, br. s.), 8.21 (1H, d, J=8.28 Hz), 7.95 (1H, d, J=2.26 Hz), 7.85 (1H, br. s.), 7.55 (1H, dd, J=8.41, 2.13 Hz), 7.30 (1H, d, J=8.28 Hz), 7.01 (1H, d, J=8.03 Hz), 3.64-3.78 (2H, m), 3.45-3.59 (4H, m), 3.23 (2H, m), 3.16 (6H, s).

1. customAfter a total of 28 h, the mixture was quenched by saturated NH4Cl (2 mL)
2. extractionextracted with EtOAc (3×2 mL)
3. customdried in vacuo
4. washeluted with 30-100% EtOAc in hexanes