Lawesson's reagent → HCID 58423875, compound

Participants

Reaction Steps

A suspension of 2-phenylspiro[chroman-4,4′-imidazolidine]-2′,5′-dione (600 mg, 2.04 mmol) and Lawesson's Reagent (825 mg, 2.04 mmol) in dry 1,4-dioxane (28 mL) is heated under reflux for 24 h. The mixture is concentrated in vacuo and the residue is purified by column to give 2-phenyl-2′-thioxospiro[chroman-4,4′-imidazolidin]-5′-one (300 mg, 50%).

Provenance & Evidence