Phenol → 5-Bromo-2-phenoxymethyl-pyridine

Participants

Reaction Steps

To an N,N-dimethylformamide (40.0 mL) solution of phenol (1.92 g, 20.4 mmol) was added sodium hydride (815 mg, 20.4 mmol, 60% in oil) on an ice bath (0° C.) under nitrogen atmosphere, which was stirred for 20 minutes at room temperature. To the reaction solution was then added a mixture of 5-bromo-2-chloromethyl-pyridine hydrochloride (4.2 g, 20.4 mmol) described in Manufacturing Example 54-1-2 and triethylamine (28.0 mL, 20.4 mmol), which was stirred first for 30 minutes at room temperature and then for 45 minutes at 70° C. Water and ethyl acetate were added to the reaction mixture, and the organic layer was extracted with ethyl acetate. This organic layer was washed with water and saturated aqueous sodium chloride, dried over anhydrous magnesium sulfate, and filtered. The solvent was evaporated from the filtrate under a reduced pressure, and the residue was purified by silica gel column chromatography (ethyl acetate:heptane=1:10) to obtain the title compound (4.40 g, 81.7%).

Provenance & Evidence