Acetyl chloride → 4-[(8-Acetyl-7-hydroxy-2-naphthalenyl)oxy]butanoic acid methyl ester

Participants

Reaction Steps

Under argon, 2.8 ml of acetyl chloride was added to a suspension of 5.15 g of aluminum chloride in 120 ml of dichloroethane. Then 8 g of 4-[(7-hydroxy-2-naphthalenyl)oxy]butanoic acid methyl ester was added and the resulting mixture was stirred at room temperature for 30 minutes and at reflux for 16 hours. The solution was filtered and the dark residue was broken up with 3N hydrochloric acid and extracted with methylene chloride. The filtrate was combined with the methylene chloride extract, washed and dried to give a black oil which was purified by HPLC (eluting with 2% ethylacetate/toluene) to yield 2.72 g (29%) of 4-[(8-Acetyl-7-hydroxy-2-naphthalenyl)oxy]butanoic acid methyl ester as an oil.

Provenance & Evidence