Sodium Hydroxide → HCID 11218203, compound

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Reaction Steps

To an ˜7:1 mixture of benzoic acid 4-(tert-butyldimethylsilyloxy)-2-methylene-butyl ester and benzoic acid 3-(tert-butyldimethylsilyloxymethyl)-but-3-enyl ester (1.00 g, 3.13 mmol) in methanol (31 mL) was added NaOH (0.306 g, 7.64 mmol) and the mixture was stirred at room temperature for 2 hours. The mixture was diluted with ethyl acetate (75 mL) and saturated aqueous NaHCO3 (20 mL). The phases were separated and the organic phase was washed with brine (2×10 mL), dried (MgSO4), and concentrated. Purification of the crude material by column chromatography on silica gel (9:1 hexanes-ethyl acetate) provided 0.58 g (58%) of 4-(tert-butyldimethylsilyloxy)-2-methylene-butan-1-ol as a colorless oil. 1H NMR (CDCl3) δ 0.06 (s, 6H), 0.90 (s, 9H), 2.34 (t, 2H, J=6.0 Hz); 2.78 (br s, 1H), 3.75 (t, 2H, J=6.0 Hz), 4.07-4.11 (m, 2H), 4.90 (s, 1H), 5.04 (s, 1H);

Provenance & Evidence