The present invention refers to a process for the preparation of unsaturated ketones or aldehydes by pyrolysis of a lactone, in the presence of a reducing agent such as molecular hydrogen or a carboxylic acid, and in the presence of a catalyst, optionally supported, comprising at least one metal selected from the group consisting of Y, Ti, Cd, Mn, Zn, Sc and Zr.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation of International application PCT/IB2004/001153 filed 1.sup.st Apr. 2004, the entire content of which is expressly incorporated herein by reference thereto.
