The aldolcondensations of various aldehydes with ketones in the presence of anionic (basic) ion‐exchange resins have been investigated. Both batch and continuous modes were studied and compared for the reaction of citral (a mixture of geranial and neral) with acetone to give ψ‐ionone. Different reaction conditions were investigated, and the performances of five different ion‐exchange resins were compared
Aldol condensation reaction and catalyst therefore
申请人:DSM IP Assets B.V.
公开号:EP1997796A1
公开(公告)日:2008-12-03
The invention relates to a novel processes for cross aldol reactions using strongly basic, anionic, macroreticular polymeric resin with quaternary ammonium groups of the type -CH2N+(CH3)3 as heterogeneous catalysts. This catalyst is recyclable and the process can be repeated several times.