Synthesis of β-Naphthol Ethyl Ether Using Polyethylene Glycol as a Phase Transfer Catalyst

β-Naphthol ethyl ether was prepared by the reaction of β-naphthol with bromic ether in the presence of polyethylene glycol.The effect of different factors such as the amount of catalyst,the molar ratio of β-naphthol to bromic ether,reaction time and etc.on yield of β-naphthol ethyl ether was carefully studied.When the molar ratio of β-naphthol to bromic ether was 1∶1 and the reaction time was 1.7 h,the yield of β-naphthol ethyl ether was 95.4%.