Kinetic Study of the Metal Triflate Catalyzed Benzoylation of Anisole in an Ionic Liquid
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- 作者：Peter Goodrich ; Christopher Hardacre ; Hasan Mehdi ; Paul Nancarrow ; David W. Rooney ; Jillian M. Thompson
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2006
- 出版时间：September 27, 2006
- 年：2006
- 卷：45
- 期：20
- 页码：6640 - 6647
- 全文大小：138K
- 年卷期：v.45,no.20(September 27, 2006)
- ISSN：1520-5045
文摘
The Friedel-Crafts benzoylation of anisole with benzoic anhydride to yield 4-methoxybenzophenone hasbeen performed in a range of ionic liquids, using homogeneous metal triflate catalysts. Of these, indium,scandium, and aluminum triflate were chosen to develop a kinetic model. A complex exchange of ligandsbetween the metal salt, the benzoic anhydride, and the ionic liquids results in the formation of a free acidcatalyst. This acid is shown to reversibly deactivated by complexation with the product; the equilibriumconstant for this has been measured, and a rate equation has been developed and successfully tested.