3,5-Dimethylphenol → HCID 66745641, compound

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Reaction Steps

To a solution of 3,5-dimethyl-phenol (3.000 g, 24.55 mmol) in N,N-dimethylformamide (120 mL) under nitrogen were added potassium carbonate (16.96 g, 122.7 mmol) and (2-bromoethoxy)-tert-butyldimethylsilane (7.90 mL, 36.8 mmol). The resulting slurry was heated at reflux for 20 hours; then, the solvent was removed under high vacuum. The residue was dissolved in ethyl acetate and the solution was backwashed with 0.2 N aqueous sodium hydroxide, water, and then brine, dried over sodium sulfate, and concentrated. The crude material (5.69 g) was purified by column chromatography (silica gel 230-400 mesh; methylene chloride as eluent) to give tert-butyl-[2-(3,5-dimethyl-phenoxy)-ethoxy]-dimethylsilane as light yellow oil. Yield: 3.72 g (47%).

Provenance & Evidence