Process for the preparation of cyclohexane-1,3-diones from...

Details Process for the preparation of cyclohexane-1,3-diones from... Process for the preparation of cyclohexane-1,3-diones from...

C - Chemistry, Metallurgy

07

C

260/577.5, 260/5

C07C 49/403 (2006.01) C07C 45/45 (2006.01) C07C 49/76 (2006.01)

Patent

CA 1123456

Abstract Or the disclosure: Cyclohexane-1,3-diones are prepared by reacting ?-ketocarboxylic acid esters in the gaseous phase at a temperature Or from 250°C to 500°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.

329420

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