Hydrochloric Acid → HCID 69659336, compound

Participants

Reaction Steps

To a stirred solution of oxindole (401 mg, 3.0 mmol) in anhydrous dimethoxyethane (20 ml) under nitrogen was added 1.0M LiHMDS/THF solution (6.3 ml, 6.3 mmol). The mixture was stirred at room temperature for 10 minutes, and 5-[3-(tetrahydro-pyran-2-yloxy)-propyl]-3H-isobenzofuran-1-one (500 mg, 1.81 mmol) was added. After stirred at room temperature for 2.5 hours, the mixture was poured into a mixture of THF (30 ml) and 2M HCl aqueous solution (30 ml) and heated at 65° C. for 1 hour. The mixture was cooled to room temperature, and then poured into an ice water (300 ml). The resulting solid was separated, rinsed with water, and dried to give 3-[5-(3-hydroxy-propyl)-3H-isobenzofuran-1-ylidene]-1,3-dihydro-indol-2-one as a yellow solid (460 mg, 83%).

Provenance & Evidence