[Br:1][C:2]1[C:7]([CH3:8])=[CH:6][C:5](I)=[CH:4][C:3]=1[CH3:10].[CH3:11][C:12]([OH:29])([CH3:28])[CH2:13][N:14]1[CH:18]=[C:17](B2OC(C)(C)C(C)(C)O2)[CH:16]=[N:15]1.C([O-])([O-])=O.[Na+].[Na+]>CN(C)C=O>[Br:1][C:2]1[C:7]([CH3:8])=[CH:6][C:5]([C:17]2[CH:16]=[N:15][N:14]([CH2:13][C:12]([CH3:28])([OH:29])[CH3:11])[CH:18]=2)=[CH:4][C:3]=1[CH3:10]A mixture of 2-bromo-5-iodo-1,3-dimethylbenzene (1.00 g), 2-methyl-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)propan-2-ol (1.11 g), and 2 M aqueous Na2CO3 solution (4.0 mL) in N,N-dimethylformamide is purged with argon for 3 min. [1,1′-Bis(diphenylphosphino)-ferrocene]-dichloropalladium dichloromethane complex (85 mg) is added and the mixture is stirred at 60° C. for 3 h. After cooling to room temperature the mixture is diluted with water and ethyl acetate. The organic phase is washed with brine, dried over MgSO4 and concentrated in vacuo. The residue is purified by HPLC on reversed phase to give the title compound. LC (method 11): tR=1.12 min; Mass spectrum (ESI+): m/z=323, 325 [M+H]+.
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