反应详情

To a solution of 1-{2-[2-(4-trifluoromethyl-phenoxymethyl)-1H-benzoimidazol-5-yl]-phenyl}-ethanone (0.215 g, 0.524 mmol) in CH2Cl2 (8 mL) at 0° C. was added tert-butyldimethylsilyl trifluoromethanesulfonate (TBSOTf) (0.304 g, 1.15 mmol) and triethylamine (0.29 mL, 2.10 mmol). After stirring 2 h, the reaction mixture was concentrated, and the residue was purified by chromatography (silica, hexanes: EtOAc, 2:1) to afford the title compound as a yellow oil (0.242 g, 88%).

1. concentrationthe reaction mixture was concentrated
2. customthe residue was purified by chromatography (silica, hexanes: EtOAc, 2:1)