反应详情

A solution of 3-[hydroxy-(4-triisopropylsilanyloxymethyl-phenyl)-methyl]-benzonitrile (0.64 g, 1.62 mmol) and tetrahydrofuran (10 mL) is stirred at 0° C. Sodium hydride, 60% in mineral oil, (80 mg, 1.95 mmol) is added and the mixture is stirred at room temperature 10 min. The mixture is cooled to 0° C. and iodomethane (0.12 mL, 1.8 mmol) is added. The resulting mixture is stirred at room temperature 18 hr. The mixture is diluted with aqueous saturated sodium hydrogen carbonate, extracted with ethyl acetate, and the organic layer concentrated. The residue is purified via silica chromatography eluting with hexanes to 9:1 hexanes:ethyl acetate to provide 400 mg, 60% the title compound, as a colorless oil. 1H NMR (CDCl3) δ 7.70 (s, 1H), 7.55-7.69 (m, 2H), 7.27-7.46 (m, 5H), 5.27 (s, 1H), 4.88 (s, 2H), 3.41 (s, 3H), 1.05-1.29 (m, 21H).

1. temperatureThe mixture is cooled to 0° C.
2. stirringThe resulting mixture is stirred at room temperature 18 hr
3. extractionextracted with ethyl acetate
4. concentrationthe organic layer concentrated
5. customThe residue is purified via silica chromatography
6. washeluting with hexanes to 9:1 hexanes