Thiobenzamide → HCID 70818685, compound

Participants

Reaction Steps

A solution of 2-chloro-1-(3,4-dihydro-2H-1-benzopyran-6-yl)ethan-1-one (9b) (250 mg, 1.19 mmol) and thiobenzamide (180 mg, 1.3 mmol) in dioxane (10 mL) was refluxed for 15 hours, then the reaction mixture was concentrated. The residue was diluted with dichloromethane (20 mL), washed with water (10 mL), brine (10 mL), dried over sodium sulfate, filtered and evaporated under reduced pressure. The residue was purified by flash chromatography on silica gel (dichloromethane/cyclohexane 60/40) to afford the desired thiazole (9c) as a white solid (330 mg, 1.12 mmol, 94%).

Provenance & Evidence