(R)-2,2-二甲基-1,3-二氧环戊烷-4-丙醇

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a suspension of lithium aluminium hydride (1.40 g, 35.6 mmol) in anhydrous tetrahydrofuran (100 mL) was added dropwise a tetrahydrofuran solution (30 mL) of ethyl 3-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]propanoate (6.00 g, 29.7 mmol) at 0° C. under nitrogen. The reaction mixture was stirred at room temperature overnight, then quenched with the addition of water (1.4 mL) and 10% aqueous sodium hydroxide (1.4 mL). The white solid was removed by filtration, and the filtrate was concentrated in vacuo. The residue was partitioned between water (50 mL) and ethyl acetate (50 mL). The organic phase was washed with brine, dried (sodium sulfate), and concentrated in vacuo to afford the title compound. 1H NMR (300 MHz, CDCl3): δ 4.03-4.13 (m, 2H), 3.65-3.69 (m, 2H), 3.50-3.55 (m, 1H), 1.61-1.69 (m, 4H), 1.32 (s, 3H), 1.24 (s, 3H). quenched with the addition of water (1.4 mL) and 10% aqueous sodium hydroxide (1.4 mL) The white solid was removed by filtration the filtrate was concentrated in vacuo The residue was partitioned between water (50 mL) and ethyl acetate (50 mL) The organic phase was washed with brine dried (sodium sulfate) concentrated in vacuo