81056-09-9Relevant academic research and scientific papers
MECANISME REACTIONNEL DE LA CONDENSATION DE L'ANETHOLE AVEC L'ACETALDEHYDE CATALYSEE PAR DES RESINES ECHANGEUSES D'IONS
Gharbi, R. El,Delmas, M.,Gaset, A.
, p. 613 - 622 (1983)
The condensation of anethole with acetaldehyde leads only three stereoisomers to 4-anisyl-2,4,6-trimethyl-1,3-dioxacyclohexane.A rection mechanism involving ionic intermediates as a result of the successive condensation of two acetaldehyde molecules is proposed.
CONDENSATION D'ALCENES AROMATIQUES AVEC L'ACETALDEHYDE CATALYSEE PAR DES RESINES ECHANGEUSES D'IONS-II; STEREOISOMERISATION ET SYNTHESE DE NOUVEAUX DIOXA-1,3 CYCLOHEXANES POLYSUBSTITUES
Gharbi, R. El,Delmas, M.,Gaset, A.
, p. 2953 - 2964 (2007/10/02)
The interconversion of the three stereoisomers of 4-anisyl-2,5,6 trimethyl-1,3 dioxacyclohexane, obtained from the condensation reaction between anethole and acetaldehyde, depends on the experimental conditions.In some cases, a reversal to the starting alkene could be observed: such a phenomenon does not seem to have been reported so far in the isomerization reactions of 1,3-dioxacyclohexanes.The data can be accounted for by a reaction mechanism involving various cationic intermediates.New 1,3-dioxacyclohexanes were obtained from acetaldehyde and various aromatic alkenes under mild reaction conditions in the presence of sulfonic ion-ex changers used as catalysts, in good yields and with high selectivity.
