反应详情

To a solution of 6-[3-(tert-butyl-diphenyl-silanyloxymethyl)-phenyl]-hexanoic acid (3.3 g, 7.2 mmol) in DMF (15 mL) is added potassium carbonate (1.09 g, 7.9 mmol) and iodomethane (500 μL, 7.9 mmol). The mixture is stirred for 6 hrs then diluted with ether. The organic layer is washed with water, brine, dried over MgSO4 and concentrated. The residue is purified by flash chromatography (eluting with 10% ether/hexanes) to give 2.42 g of title compound. 1H NMR (300 MHz, CDCl3) δ 7.70 (m, 4H), 7.38 (m, 6H), 7.20 (m, 2H), 7.12 (s, 1H), 7.06 (d, 1H), 4.76 (s, 2H), 3.65 (s, 3H), 2.59 (t, 2H), 2.30 (t, 2H), 1.64 (m, 4H), 1.37 (m, 2H), 1.10 (s, 9H).

1. washThe organic layer is washed with water, brine
2. dry with materialdried over MgSO4
3. concentrationconcentrated
4. customThe residue is purified by flash chromatography (eluting with 10% ether/hexanes)