PROCESS FOR THE PRODUCTION OF DIMEDONE

摘要

PROCESS FOR THE PRODUCTION OF DIMEDONEABSTRACT OF THE DISCLOSUREProcess for the production of dimedone from isophorone.The isophorone is converted in the presence of a solvent withozone into an ozone-addition product. An alcohol correspondingto the ester radical is added at the latest after the formationof the ozone-addition product for the formation of the inter-mediate product 3,3-dimethvl-5-oxo-hexanoic acid ester. Theozone addition product is heated in the presence of acids toa temperature of 20° to 150°C. The 3,3-dimethyl-5-oxo-hexanoic acid ester is isolated thereby. The ester is thenconverted in a further step into dimedone by treatment of theester with an alkali alcoholate in an anhydrous milieu.