反应详情

A solution of 3-chloro-N-(5-(3-(2-cyanopropan-2-yl)benzamido)-2-methylphenyl)thieno[2,3-b]pyrazine-6-carboxamide 95 (0.049 mmol, 24 mg) and methylamine 33% in MeOH (0.049 mmol, 500 μL, 4.61 mg) in butan-2-ol (500 μL) was stirred at 150° C. for 5 h. The reaction mixture was concentrated under reduced pressure and purified with HPLC to give the title compound N-(5-(3-(2-cyanopropan-2-yl)benzamido)-2-methylphenyl)-3-(methylamino)thieno[2,3-b]pyrazine-6-carboxamide (96a) (3 mg, 12%). NMR (400 MHz, DMSO-d6) 1.75 (s, 6H), 2.24 (s, 3H), 2.89 (d, J=4.7 Hz, 3H), 7.28 (d, J=8.2 Hz, 1H), 7.60 (t, J=7.8 Hz, 1H), 7.62 (dd, J=8.2 Hz and 2.0 Hz, 1H), 7.75 (d, J=7.8 Hz, 1H), 7.83 (m, 2H), 7.95 (d, J=7.8 Hz, 1H), 8.05 (s, 1H), 8.11 (s, 1H), 8.25 (s, 1H), 10.08 (s, 1H), 10.33 (s, 1H). (m/z)=485 (M+H)+.

1. concentrationThe reaction mixture was concentrated under reduced pressure
2. custompurified with HPLC