Method of producing ketoisophorone

Details Method of producing ketoisophorone Method of producing ketoisophorone

1997-05-15

1999-02-23

Shippen, Michael L.

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

Organic compounds

Oxygen containing

C07C 4500

Patent

active

058746323

ABSTRACT:
An improved method of producing 3,5,5-trimethylcyclohex-2-ene-1,4-dione (KIP) by the oxidation of 3,5,5-trimethylcyclohex-3-ene-1-one (.beta.-IP) in the presence of managansalene-like catalysts and certain catalytic additives. ##STR1## KIP is an important intermediary product in the synthesis of trimethylhydroquinone, an initial substance in the synthesis of vitamin E. Furthermore, KIP is an initial compound for the synthesis of various carotinoids.

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patent: 4092361 (1978-05-01), Costantini
patent: 4898985 (1990-02-01), Ito
Mukoyama, et al., "Preparation of Keytones by Oxidation of Olefins Using Cobalt Diketone Catalysts", Chemical Abstracts, vol. 113, No. 17, 22 Oct. 1990, Columbus, Ohio, Abstract No. 151836.
Ito, et al., "Preparation of 3,5,5-trimethyl-2-cyclohexene-1, . . . one", Chemical Abstracts, vol. 111, No. 17, 23 Oct. 1989, Columbus, Ohio, Abstract No. 153260.

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