Triethylsilane → HCID 59332633, compound

Participants

Reaction Conditions

Reaction Steps

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.

Provenance & Evidence