| abstract |
process for pseudoionone preparation. pure lanthanum oxide, obtained by calcination of oxygen-containing lanthanum salts at a temperature of at least 700 <198> c, is used as a heterogeneous catalyst in which the condensation of citral aldol and acetone to pseudoionone; Pseudoionone is prepared by a process of aldolic condensation of citral and acetone in liquid phase using pure lanthanum oxide. |