HCID 20556706, compound → (RS)-Naproxen methyl ester

Participants

Reaction Steps

Methyl α-methylthio-α-(6-methoxy-2-naphthyl)propionate (372 mg) was dissolved in 2 ml of methanol, and 10 ml of a methanol suspension of 5.0 cc of Raney nickel (W-II) was added, and the mixture was stirred at room temperature for 15 hours. The insoluble matter was separated by filtration, and the filtrate was concentrated under reduced pressure. Methylene chloride was added to the residue. The insoluble matter was separated by filtration. The filtrate was concentrated under reduced pressure, and the residue was chromatograhed on a silica gel column using benzene as an eluent to afford 212 mg of methyl α-(6-methoxy-2-naphthyl)propionate as colorless crystals in a yield of 68%. The product had a melting point (from petroleum ether) of 67° to 69° C. The IR and NMR spectra of this product coincided with those of the authentic sample.

Provenance & Evidence