N1C(Cl)=NC(Cl)=NC=1[Cl:3].CN(C)C=O.[Br:15][C:16]1[C:17]([O:27][CH3:28])=[C:18]([CH:24](O)[CH3:25])[CH:19]=[C:20]([Cl:23])[C:21]=1[CH3:22]>C(Cl)Cl>[Br:15][C:16]1[C:21]([CH3:22])=[C:20]([Cl:23])[CH:19]=[C:18]([CH:24]([Cl:3])[CH3:25])[C:17]=1[O:27][CH3:28]A mixture of cyanuric chloride (1.7 g, 9.2 mmol) and N,N-dimethylformamide (710 μL, 9.2 mmol) was stirred at room temperature for 10 minutes and then a solution of 1-(3-bromo-5-chloro-2-methoxy-4-methylphenyl)ethanol (from Example 16, Step 1) (1.72 g, 6.15 mmol) in methylene chloride (34 mL) was added and the reaction was stirred at room temperature overnight. The mixture was diluted with methylene chloride, washed with sat. NaHCO3, water, brine, dried over Na2SO4, filtered and concentrated. The crude product was purified by silica gel chromatography, eluting with 0 to 10% EtOAc in hexanes (1.01 g, 60%).
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