Br[C:2]1[C:10]2[O:9][CH:8]=[CH:7][C:6]=2[CH:5]=[C:4]([F:11])[CH:3]=1.[OH:12][C:13]1[CH:18]=[CH:17][C:16](B(O)O)=[CH:15][CH:14]=1.C(=O)([O-])[O-].[Na+].[Na+].O1CCOCC1>C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].O>[F:11][C:4]1[CH:3]=[C:2]([C:16]2[CH:17]=[CH:18][C:13]([OH:12])=[CH:14][CH:15]=2)[C:10]2[O:9][CH:8]=[CH:7][C:6]=2[CH:5]=1To the compound (210 mg, 0.977 mmol) of Step 1, 4-hydroxyphenylboronic acid (162 mg, 1.17 mmol), sodium carbonate (228 mg, 2.15 mmol), and Pd(dppf)Cl2 (catalytic amount), 1,4-dioxane (1.2 mL) and water (0.4 mL) were added, and stirred at 100° C. for 2 hours. The reaction solution was concentrated under reduced pressure. To the residue, ethyl acetate and 1 N hydrochloric acid were added and stirred. After that, the insoluble material was filtered off, and extraction was performed with ethyl acetate. The organic phase was washed with saturated brine, and then dried over anhydrous magnesium sulfate. The solvent was distilled away under reduced pressure. The resulting residue was purified by silica gel chromatography (hexane/ethyl acetate) to thus obtain the title compound.
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