[I:1][C:2]1[CH:7]=[CH:6][NH:5][C:4](=[O:8])[CH:3]=1.C1C=CN=C(C2C=[CH:17][CH:18]=[CH:19]N=2)C=1.C1(B(O)O)CC1.C([O-])([O-])=O.[Na+].[Na+]>ClC(Cl)C.CC([O-])=O.CC([O-])=O.[Cu+2]>[CH:17]1([N:5]2[CH:6]=[CH:7][C:2]([I:1])=[CH:3][C:4]2=[O:8])[CH2:18][CH2:19]1A mixture of 4-iodopyridin-2(1H)-one (0.2425 g, 1.10 mmol, 1.0 equiv), Cu(OAc)2 (0.2146 g, 1.18 mmol, 1.07 equiv), bipyridine (0.1832 g, 1.17 mmol, 1.07 equiv), cyclopropylboronic acid (0.2122 g, 2.47 mmol, 2.25 equiv) and Na2CO3 (0.2638 g, 2.49 mmol, 2.27 equiv) in dichloroethane (10 mL) was stirred at 70° C. for 18 h. The reaction mixture was quenched with satd aq NH4Cl, diluted with CH2Cl2, and dried over Na2SO4. After the solvent was removed under reduced pressure, the residue was purified by chromatography on silica gel eluted with hexanes/ethyl acetate to afford 0.2309 g (81%) of 1-cyclopropyl-4-iodopyridin-2(1H)-one.
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