Process for the preparation of cyclohexane-1,3-dione from
申请人:Hoechst Aktiengesellschaft
公开号:US04409400A1
公开(公告)日:1983-10-11
Cyclohexane-1,3-diones are prepared by passing .delta.-ketocarboxylic acid esters in the gaseous phase over a temperature of from 250.degree. C. to 500.degree. C. at a catalyst. The catalyst contains at least one element of groups III B or IV B of the Periodic System in the form of a compound. Particularly preferred catalysts are thorium compounds on charcoal carriers.