Br[C:2]1[C:11]([F:12])=[C:10]2[C:5]([CH:6]=[CH:7][C:8]([CH3:13])=[N:9]2)=[CH:4][CH:3]=1.[Br-].[CH:15]1([Zn+])[CH2:17][CH2:16]1.C(OCC)(=O)C.O>C1COCC1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH:15]1([C:2]2[C:11]([F:12])=[C:10]3[C:5]([CH:6]=[CH:7][C:8]([CH3:13])=[N:9]3)=[CH:4][CH:3]=2)[CH2:17][CH2:16]1A solution of 7-bromo-8-fluoro-2-methylquinoline (0.15 g, 0.63 mmol), Pd(PPh3)4 (0.072 g, 0.063 mmol) and 0.5 M cyclopropylzinc(II) bromide (2.50 ml, 1.25 mmol) in THF was stirred at reflux for 12 hours. After cooling to ambient temperature, ethyl acetate (20 mL) and water (5 mL) were added. The organic layer was separated, washed with brine, dried (sodium sulfate), filtered and concentrated under reduced pressure. The residue was purified by flash chromatography on silica gel (hexane/ethyl acetate 2:1) to give 7-cyclopropyl-8-fluoro-2-methylquinoline (0.10 g, 80.3%) as a solid.
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