反应 #3725609
相关文献 (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US08372875B2
反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: 2,6-Dimethyltetrahydro-4H-thiopyran-4-one (0.293 g, 2.03 mmol) was dissolved in dichloromethane (35 mL) in an oven dried flask containing 3 Å molecular sieves and stirred under argon at 0° C. TMS-OTf (0.451 g, 2.0 mmol, 0.36 mL) was added slowly to the mixture over 10 min. Ethyl 5-bromo-1H-indole-7-carboxylate (0.293 g, 2.031 mmol) was dissolved in DCM (10 mL) and added to the reaction via syringe pump over 2 hours, after which it was stirred for 3 hours between 0 and 10° C. The reaction was cooled to 0° C. and triethylsilane (0.353 g, 0.485 mL, 3.04 mmol) was then added all at once and the reaction was stirred at room temperature overnight. The reaction was then quenched with a saturated sodium bicarbonate solution, filtered, then extracted with DCM. The combined organics were washed with water. The combined aqueous layers were back-extracted with DCM. The combined organics were washed with brine, dried with MgSO4, and concentrated. The crude compound was purified on Combiflash silica column with 0-30% EA/DCM to give 0.212 g (26%) of the title compound. dried flask containing 3 Å molecular sieves added to the reaction via syringe pump over 2 hours after which it was stirred for 3 hours between 0 and 10° C The reaction was cooled to 0° C. was stirred at room temperature overnight The reaction was then quenched with a saturated sodium bicarbonate solution filtered extracted with DCM The combined organics were washed with water The combined aqueous layers were back-extracted with DCM The combined organics were washed with brine dried with MgSO4 concentrated The crude compound was purified on Combiflash silica column with 0-30% EA/DCM
来源 ID: ord-16dfc7a79a8646d2a4910504ae8b40ff