Furfural → HCID 66755973, compound

Participants

Reaction Steps

Sodium ethylate (6.5 g, 95 mmol) was added under vigorous stirring to a solution of 2-furaldehyde (10 g, 79 mmol) and diethyl succinate (27.6 g, 158 mmol) in ethanol (300 mL). The reaction mixture was refluxed for 3 h and evaporated in vacuum (˜20 mmHg) at 50° C. until the solvent distillation ceased. The obtained residue was diluted with 200 mL of 10% HCl and 300 mL of ethyl acetate. The mixture was shaken. The organic layer was separated, diluted with 200 mL of a saturated aqueous solution of NaHCO3, and shaken. The aqueous layer was separated, neutralized by 10% HCl to pH 2, and subjected to extraction by 400 mL of ethyl acetate. The organic layer was evaporated in vacuum (˜20 mmHg) at 60° C. and chromatographed on a layer of silica gel (200×150 mm) with hexane/ethyl acetate mixture (1:1). Fractions containing the target product were collected and evaporated in vacuum to give the product 9.3 g (38 mmol, 49%) as a light-brown oil.

Provenance & Evidence