Br[C:2]1[CH:3]=[CH:4][C:5]([N:8]2[CH:12]=[CH:11][CH:10]=[N:9]2)=[N:6][CH:7]=1.C1(C)C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C.[C:35](OC)(=[O:38])[CH:36]=[CH2:37]>CN(C=O)C.CCOCC.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[N:8]1([C:5]2[N:6]=[CH:7][C:2]([CH:37]=[CH:36][CH:35]=[O:38])=[CH:3][CH:4]=2)[CH:12]=[CH:11][CH:10]=[N:9]1A solution of the compound from step A (450 mg, 2.01 mmol) and tri(o-tolyl)phosphine (123 mg, 0.40 mmol) in DMF (8 mL) was cooled to 0° C. and purged with nitrogen for 15 min. TEA (0.56 mL, 4.02 mmol) and methyl acrylate (0.36 mL, 4.00 mmol) were added and purging was continued for 5 min. Palladium acetate (45 mg, 0.20 mmol) was added and the flask was stoppered and heated to 120° C. for 24 h. The cooled reaction mixture was diluted with ether (50 mL) and washed with water (2×25 mL) and brine (25 mL), dried (MgSO4), and concentrated. Purification by chromatography (SiO2, 4:1 hexane/ethyl acetate) yielded 356 mg (77%) of the title compound. MS 230 (M+H)+.
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