Hydrochloric Acid → HCID 76798884, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 1,3-dihydro-indol-2-one (650 mg, 4.77 mmol.) in THF (10 mL) is cooled to 0° C. under an argon atmosphere and treated with a solution of lithium bis(trimethylsilyl)amide (9.6 mL of a 1 M solution in THF, 9.6 mmol) dropwise. The ice bath is removed and 6-chloro-1-ethyl-1H-furo[3,4-c]pyridin-3-one (630 mg, 3.18 mmol) is added directly as a solid. The resulting solution is stirred for 4.5 h. The reaction mixture is poured into aqueous 10% HCl solution (100 mL) and stirred at room temperature for 10 min and then heated at 90-100° C. for 2 h. The reaction mixture is cooled to room temperature for 36 h during which time a precipitate formed. The precipitate which formed is collected by filtration and dried to give the title compound as an orange solid (670 mg, 67%).

Provenance & Evidence