Isopropanol → 2-(Diisopropylamino)ethyl 2-phenylbenzofuran-7-carboxylate

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Reaction Steps

A mixture of 1.16 g of 2-phenylbenzofuran-7-carboxylic acid, 1.0 g of 2-(diisopropylamino)ethyl chloride hydrochloride, 0.66 g of potassium hydroxide and 20 ml of isopropanol is refluxed for 1 hour. After cooling, ethyl acetate and water are added to the reaction mixture. The organic layer is collected, washed with a saturated sodium chloride solution and evaporated to remove solvent. The residue is purified by silica gel column chromatography (solvent; chloroform:methanol=20:1) to give 1.51 g 2-(diisopropylamino)ethyl 2-phenylbenzofuran-7-carboxylate as colorless oil.

Provenance & Evidence