Selective Acetylation of 2-Naphthol to 2-Naphthyl Acetate with Ni Homogeneous Catalysts: An Environmentally Friendly Protocol

An efficient, selective and simple route for the synthesis of 2-Naphthyl acetate has been developed. In reflux conditions the acetylation of 2-naphthol acetylation with a catalytic amount of Nickel nitrate catalysts afforded 2-Naphthyl acetate in moderate to excellent yields. Nickel nitrate showed the best catalytic performance compared to other Nickel salts. Different weights of nickel salts have been evaluated for the title reaction with 30mg NiNO 3 afforded the Best conversions. Different acylating reagents were evaluated acetic acid, acetyl chloride and acetic anhydride, and it was observed that acetic acid was the best acetylating reagent. The protocol has advantages including short reaction times, high chemoselectivity towards acylated product simple work-up. Additionally, nickel nitrate, other additives are not required to enhance the reactions.