Ethyl 8-bromooctanoate → HCID 54540689, compound

Participants

Reaction Steps

A mixture of 26.4 g (0.1 mole) of ethyl-8-bromooctanoate (95%, Pfaltz and Bauer) and 19.6 g (0.1 mole) of potassium phthalimide (98%, Aldrich) in 250 mL of dimethylformamide was stirred and heated at reflux for 4 hr. The solvent was evaporated under reduced pressure and the viscous residue was partitioned between ethyl ether and water (400 mL each). The aqueous layer was further extracted with two 200 mL of ethyl ether. The combined ether extracts were washed with 200 mL of water and dried over magnesium sulfate. The solvent was evaporated under reduced pressure and the viscous, oily residue was triturated with ethyl ether-petroleum ether (30°-60° C.) and the resulting solid was collected by filtration. The filtrate was evaporated under reduced pressure to give 25.2 g (79%) of crude title compound as a viscous oil. A 2.0 g sample of this oil was purified by high pressure liquid chromatography (Waters Associates Prep LC/System 500A; PrepPak® 500 silica; ethyl acetate-hexanes, 1:20; flow rate: 200 mL/min.). Fractions containing title compound were combined and the solvents were evaporated under reduced pressure to give 1.9 g (95% recovery) of clear liquid.

Provenance & Evidence