反应详情

A solution of 3-(2-cyanopropan-2-yl)-N-(3-(2-mercaptoacetamido)-4-methylphenyl)benzamide 16 (0.054 mmol, 20 mg), methyl 3-bromopyrazine-2-carboxylate 101 (0.054 mmol, 11.8 mg) and Na2CO3 (1.2 eq, 7 mg) in ethanol (1 mL) was stirred overnight at 70° C. The reaction mixture was quenched in cold 1N HCl solution and extracted with CH2Cl2. Organic layer was dried and evaporated. Purification by chromatography (0-10% methanol in CH2Cl2) gave N-(5-(3-(2-cyanopropan-2-yl)benzamido)-2-methylphenyl)-7-oxo-6,7-dihydrothieno[2,3-b]pyrazine-6-carboxamide 102 (11 mg, 42.9%). NMR (400 MHz, DMSO-d6) 1.77 (s, 6H), 2.35 (s, 3H), 7.15 (d, J=8.6 Hz, 1H), 7.48 (dd, J=8.2 Hz and 2.3 Hz, 1H), 7.59 (t, J=7.8 Hz, 1H), 7.74 (d, J=7.8 Hz, 1H), 7.97 (d, J=7.8 Hz, 1H), 8.07 (t, J=2.0 Hz, 1H), 8.54 (br s, 1H), 8.62 (br s, 1H), 8.66 (d, J=1.6 Hz, 1H), 10.29 (s, 1H). (m/z)=473 (M+H)+.

1. customThe reaction mixture was quenched in cold 1N HCl solution
2. extractionextracted with CH2Cl2
3. customOrganic layer was dried
4. customevaporated
5. customPurification by chromatography (0-10% methanol in CH2Cl2)