Process for the production of dimedone

Details Process for the production of dimedone Process for the production of dimedone

1982-05-19

1983-11-08

Reamer, James H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

560174, 562577, 549546, 568377, C07C 4548

Patent

active

044144180

ABSTRACT:
Process for the production of dimedone from isophorone. The isophorone is converted in the presence of a solvent with ozone into an ozone-addition product. An alcohol corresponding to the ester radical is added at the latest after the formation of the ozone-addition product for the formation of the intermediate product, 3,3-dimethyl-5-oxo-hexanoic acid ester. The ozone addition product is heated in the presence of acids to a temperature of 20.degree. to 150.degree. C. The 3,3-dimethyl-5-oxo-hexanoic acid ester is isolated thereby. The ester is then converted in a further step into dimedone by treatment of the ester with an alkali alcoholate in an anhydrous milieu.

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