Br[C:2]1[CH:7]=[CH:6][C:5]([NH:8][S:9]([CH3:12])(=[O:11])=[O:10])=[CH:4][CH:3]=1.[CH3:13][O:14][C:15]1[CH:20]=[CH:19][C:18](B(O)O)=[CH:17][CH:16]=1.C(=O)([O-])[O-].[Na+].[Na+].[Cl-].[Na+]>C(O)C.C1(C)C=CC=CC=1>[CH3:13][O:14][C:15]1[CH:20]=[CH:19][C:18]([C:2]2[CH:7]=[CH:6][C:5]([NH:8][S:9]([CH3:12])(=[O:11])=[O:10])=[CH:4][CH:3]=2)=[CH:17][CH:16]=1A mixture composed of 500 mg of N-(4-bromophenyl)methane-sulfonamide, 334 mg of 4-methoxyphenyl boronic acid, 55.5 mg of tetrakis-triphenylphosphinepalladium, 2 ml of a 2 M aqueous solution of sodium carbonate, 4 ml of toluene, and 1 ml of ethanol was heated under. reflux for 5 hours in an atmosphere of nitrogen. After the reaction mixture was poured into a saturated aqueous solution of sodium chloride, the product was extracted with ethyl acetate. The organic layer was washed with water and dried over anhydrous magnesium sulfate. After the solvent was distilled off, the resulting crude product was purified by silica gel column chromatography (using a 7:1 mixture of chloroform and tetrahydrofuran as the eluent) to obtain 94 mg of N-(4′-methoxybiphenyl-4-yl)methanesulfonamide.
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