反应 #1285450
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openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US08227635B2
反应条件: temp:25.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: 2-(4-Methoxybenzyl)-2-methyl-1,3-dioxolane (0.64 g, 3 mmol), sodium dodecyl sulfate (0.2 g, 0.7 mmol) and a stir bar were added to the inside of a PDMS thimble. p-Toluene sulfonic acid monohydrate (0.145 g, 0.8 mmol) dissolved in 4 mL water was added to the inside of the PDMS thimble followed by 2 mL of THF. The reaction was stirred at 25° C. for 5 hours. LiAlH4 (0.229 g, 6 mmol) and 5 mL hexanes were added to the outside of the PDMS thimble and the reaction proceeded for 24 hours. 5 mL Water was added. The PDMS thimble was swelled with 20 mL hexanes and 2×20 mL diethyl ether, the organics were combined and dried over MgSO4 and evaporated. The product was purified by flash chromatography eluting with 1:4 ethyl acetate:hexanes to yield a pale yellow oil (0.43 g, 83% yield). 1H NMR (CDCl3): δ 1.22 (d, J=5.7 Hz, 3H), 1.69 (s, 1H), 2.61 (dd, J=13.2, 7.5 Hz, 1H), 2.72 (dd, J=13.5, 4.8 Hz, 1H), 3.78 (s, 3H), 3.93-3.98 (m, 1H), 6.85 (d, J=8.4, 2H), 7.12 (d, J=8.7 Hz, 2H). 13C NMR (CDCl3): δ 22.61, 44.77, 55.18, 68.88, 113.89, 130.27, 130.43, 158.19. the reaction proceeded for 24 hours dried over MgSO4 evaporated The product was purified by flash chromatography eluting with 1:4 ethyl acetate
来源 ID: ord-10d42067605b4da49f7beae852c0f9c5