Synthesis of Pseudo-ionone by Condensation of Citral with Acetone in presence of KF/Al_5O_3

This paper studied the synthesis of pseudo-ionone from mixed aldol condensation of citral and acetone, with Al2O3-supported KF as the catalyst of the condensation.The optimum conditions were established: reaction temperature 15+++++ ;reaction time 0.5h;citral:acetone 10mmo/90mmol; the amount of KF/ Al2O3 is 1.45g; the conversion of citral is up to 97.6%,the selectivity of pseudo-ionone is 100%.