Process for making aromatic aldehydes using ionic liquids

Details Process for making aromatic aldehydes using ionic liquids Process for making aromatic aldehydes using ionic liquids

C - Chemistry, Metallurgy

07

C

C07C 45/49 (2006.01) C07C 7/148 (2006.01) C07C 45/82 (2006.01) C07C 47/542 (2006.01)

Patent

CA 2343309

A process for the carbonylation of alkyl aromatic compounds uses acidic ionic liquids. In one embodiment, the ionic liquid is intrinsically acidic, having an anion mole fraction of greater than 0.5. The ionic liquids include those comprised of a quaternary nitrogen-containing cation and a metal halide anion. The process provides for good conversion and selectivity in the production of the corresponding aromatic aldehyde compound.

L'invention se rapporte à un procédé de carbonylation de composés aromatiques d'alkyle qui utilise des liquides ioniques acides. Selon une réalisation de l'invention, le liquide ionique est intrinsèquement acide et comporte une fraction molaire d'anions supérieure à 0,5. Les liquides ioniques incluent ceux comportant un cation contenant de l'azote quaternaire et un anion d'halogénure métallisé. Ledit procédé permet de produire le composé aldéhyde aromatique correspondant dans de bonnes conditions de conversion et de sélectivité.

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