[Br:1][C:2]1[CH:3]=[C:4]([CH2:8][OH:9])[CH:5]=[CH:6][CH:7]=1.[CH3:10][C:11]([Si:14](Cl)([CH3:16])[CH3:15])([CH3:13])[CH3:12].N1C=CN=C1>C1COCC1>[Br:1][C:2]1[CH:3]=[C:4]([CH:5]=[CH:6][CH:7]=1)[CH2:8][O:9][Si:14]([C:11]([CH3:13])([CH3:12])[CH3:10])([CH3:16])[CH3:15](3-Bromophenyl)methanol (5.0 g) was mixed with THF (60 ml), and TBSCl (5.0 g) and imidazole (3 g) were added thereto, followed by stirring at room temperature overnight. The reaction mixture was concentrated under reduced pressure, and water and EtOAc were added thereto. The organic layer was dried over Na2SO4 and concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography to obtain [(3-bromobenzyl)oxy](tert-butyl)dimethylsilane (8.0 g).
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