反应详情

温度

10 °C

Magnesium trifluoromethanesulfonate (0.974 g, 3.02 mmol) was added in one portion to (S)-methyl oxirane-2-carboxylate (1.234 g, 12.08 mmol) and (S)-1-(tert-butyldimethylsilyloxy)propan-2-ol (CAS no. 113534-13-7) (2.30 g, 12.08 mmol) in EtOAc (5 mL) cooled to 10° C. The resulting suspension was stirred at 10° C. for 10 minutes and then warmed to 45° C. and stirred for 2 days. The crude product was purified by flash silica chromatography, eluting with 0 to 30% EtOAc in isohexane to afford the product (1.336 g, 37.8%). 1H NMR (400 MHz, DMSO) δ0.00 (s, 6H), 0.83 (s, 9H), 0.98 (d, 3H), 3.34-3.53 (m, 3H), 3.55-3.64 (m, 5H), 4.11 (q, 1H), 5.39 (d, 1H)

1. temperaturewarmed to 45° C.
2. stirringstirred for 2 days
3. customThe crude product was purified by flash silica chromatography
4. washeluting with 0 to 30% EtOAc in isohexane