| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 68812 | Journal of Molecular Catalysis A: Chemical | 2007 | 5 Pages |
The carbonylation of iodobenzene catalyzed by water-soluble palladium–TPPTS complex (TPPTS: trisodium salt of tri(m-sulphonylphenyl)phosphine) has been investigated in ionic liquid 1-n-butyl-3-methylimidazolium p-toluenesulfonate ([bmim][p-CH3C6H4SO3]) in the presence of alcohol. The ionic liquid [bmim][p-CH3C6H4SO3] used as the reaction media brings some definitive advantages over the halogen-containing analogue [bmim]BF4, [bmim]PF6 and conventional organic solvents. The combination of palladium–TPPTS complex and [bmim][p-CH3C6H4SO3] exhibits excellent catalytic activity and selectivity, and simplifies the separation of the products from catalyst. In the carbonylation of iodobenzene, TOF (turnover frequency) of up to 1938 h−1 was observed and the selectivity for ethyl benzoate was over 99%. The catalyst can be easily separated from the organic products and reused for 10 times without the significant decrease of activity and selectivity.
Graphical abstractThe carbonylation of iodobenzene catalyzed by water-soluble palladium–TPPTS complex has been investigated in ionic liquid [bmim][p-CH3C6H4SO3]. The combination of palladium–TPPTS complex and [bmim][p-CH3C6H4SO3] exhibits excellent catalytic activity and selectivity. The catalyst can be reused for 10 times. Figure optionsDownload full-size imageDownload as PowerPoint slide
