反应详情

A mixture of 5′-chloro-2′-fluoro-N-(3-fluorobenzyl)-2,4′-bipyridin-6-amine (Intermediate B) (15 mg, 0.045 mmol) was added DMSO (0.4 ml) and methyl amine 40% in water (200 μl, 2.293 mmol) in a microwave tube was micro waved at 145° C. for 900 seconds and the reaction progress was followed by LCMS. Most of the amine was removed under vacuum, 0.5 ml of DMSO was added, filtered and purified by prep LC. After lypholization 13.9 mg of the title compound was obtained as a TFA salt. LCMS (m/z): 343.0 (MH+), retention time=0.67 min.; 1H NMR (300 MHz, METHANOL-d4, 25° C.) δ ppm 2.97 (s, 3 H) 4.62 (s, 2 H) 6.81 (d, J=8.50 Hz, 1 H) 6.91-7.02 (m, 3 H) 7.09 (d, J=9.96 Hz, 1 H) 7.17 (d, J=7.62 Hz, 1 H) 7.27-7.39 (m, 1 H) 7.69 (dd, J=8.50, 7.33 Hz, 1 H) 8.03 (s, 1 H).

1. customMost of the amine was removed under vacuum, 0.5 ml of DMSO
2. additionwas added
3. filtrationfiltered
4. custompurified by prep LC