Triethylamine → HCID 9933992, compound

Participants

Reaction Steps

To a suspension of 5-chloro-3-(2-methylphenyl) benzofuran-2-carboxylic acid (300 mg) in anhydrous benzene (10 ml) were added diphenyl phosphoryl azide (0.33 ml) and triethylamine (0.16 ml). The mixture was stirred for 15 minutes at room temperature, then heated under reflux for one hour. To the reaction mixture (containing 5-chloro-3-phenylbenzofuran-2-isocyanate) was added 2,6-diisopropyl aniline (0.3 ml), and the mixture was stirred with heating under reflux for 0.5 hour, then the solvent was distilled off. To the residue was added ethyl acetate, which was washed with water, dilute hydrochloric acid, water, an aqueous solution of sodium hydrogencarbonate and water, successively, followed by drying and distilling off the solvent to give the title compound as colorless crystals (217 mg).

Provenance & Evidence