[Br:1][C:2]1[CH:7]=[CH:6][N:5]=[C:4]([NH2:8])[CH:3]=1.[CH2:9]([O:11][C:12](=[O:17])[C:13](=O)[CH2:14]Br)[CH3:10]>C1(C)C=CC=CC=1.O>[CH2:9]([O:11][C:12]([C:13]1[N:8]=[C:4]2[CH:3]=[C:2]([Br:1])[CH:7]=[CH:6][N:5]2[CH:14]=1)=[O:17])[CH3:10]To a stirred solution of 4-Bromo-pyridin-2-ylamine (4 g, 23.12 mmol) in toluene (40 mL) is added 3-Bromo-2-oxo-propionic acid ethyl ester (4.5 g, 23.12 mmol). The reaction mixture is heated at 115° C. for 16 hours. Reaction mixture is cooled to 0° C. then diluted with water and extract with ethyl acetate. Organic layer is dried over sodium sulphate, solvent is evaporated in vacuo to afford the title compound (6.5 g). 1H-NMR (400 MHz, DMSO-d6) δ: 1.31 (t, J=7.2 Hz, 3H), 4.26-4.33 (q, J=7.2 Hz, 2H), 7.18-7.20 (dd, J1=1.92 Hz, J2=7.16 Hz, 1H), 7.98 (s, 1H), 8.53 (d, J=7.32 Hz, 1H), 8.57 (s, 1H). LC-MS (m/z): [M+H]=271.0.
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