16576-25-3 → HCID 54321678, compound

Participants

Reaction Steps

To a solution of 2-benzoylquinoline (4.0 g) and (5-carboxy-l-pentyl)triphenylphosphonium bromide (11.8 g) in DMSO (50 ml) was added potassium t-butoxide (5.8 g) gradually and the mixture was stirred at room temperature for 30 minutes. This reaction mixture was poured in iced water and washed with toluene. The aqueous layer was neutralized with 3N HCl and extracted with ethyl acetate. The extract was washed with saturated aqueous sodium chloride solution and dried and the solvent was distilled off. The crude residue was purified by silica gel column chromatography (hexane-ethyl acetate=2:1) to give 0.90 g of 7-phenyl-7-(2-quinolyl)-6-heptenoic acid as a mixture of its (E) and (Z) forms. This mixture (0.90 g) and 5% palladium-on-carbon (0.90 g) were suspended in methanol (10 ml) and stirred in a hydrogen atmosphere at room temperature for 3 hours. The catalyst was then filtered off and the filtrate was concentrated to provide the title compound (1.0 g).

Provenance & Evidence