Condensation of aldehydes with ketones by multiphase reaction

Details Condensation of aldehydes with ketones by multiphase reaction Condensation of aldehydes with ketones by multiphase reaction

C - Chemistry, Metallurgy

07

C

C07C 49/203 (2006.01) C07C 29/17 (2006.01) C07C 45/62 (2006.01) C07C 45/74 (2006.01) C07C 45/75 (2006.01)

Patent

CA 2370808

Disclosed is an aldol condensation process for the preparation of an .alpha.,.beta.-unsaturated ketone by reacting an aldehyde with a ketone with the use of a water-soluble basic catalyst in a tubular reactor. The process employs a two liquid phase reaction system comprising a continuous phase containing the catalyst and a dispersed phase containing at least one of the aldehyde and the ketone and is conducted at a load factor of the tubular reactor of at least 0.8. The .alpha.,.beta.-unsaturated ketone can be produced with a high selectivity and at a high space-time yield.

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