Catalytic Synthesis of Methyl α-Naphthylacetate by Heterogeneous Supported Heteropoly Acid Catalyst TiSiW_(12)O_(40)/TiO_2

A new method of preparing methyl \%α\% naphthylacetate using TiSiW\-\{12\}O\-\{40\}/TiO\-2 as a catalyst was described, ester content was ≥99.0 %, yield was 98.6 %. This catalyst showed many advantages, for example, it can decrease the corrosion of equipment and the pollution in the environment, and has higher ester ification and selectivity. The treating products is simplified and the catalyst may be used repeatedly. The reaction conditions recommended are that molar ratio of alcohol to acid is 10∶1, amount of catalyst is 6 % of 1\|naphthaleneacetic acid, reaction temperature is 64.5～68.5 ℃ and reaction time is 3 h.