Method of producing 3, 5, 5-trimethylcyclohexa-3-ene-1-one(.beta

Details Method of producing 3, 5, 5-trimethylcyclohexa-3-ene-1-one(.beta Method of producing 3, 5, 5-trimethylcyclohexa-3-ene-1-one(.beta

1997-09-26

1999-12-21

Reamer, James H.

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

Organic compounds

Oxygen containing

568347, C07C 4567

Patent

active

060051477

ABSTRACT:
A method of producing 3,5,5-trimethylcyclohexa-3-ene-1-one (.beta.-isophorone) including a catalyst of an oxide or mixed oxide of at least one element of the groups IIa, VIII, Ib, IIIa and Va of the periodic system. Isomerization is carried out without the addition of an organic base. The space-time yield in the production of .beta.-isophorone by the isomerization of .alpha.-isophorone is at a level suitable for an industrial application. .beta.-isophorone is especially suitable as an intermediate product for producing ketoisophorone.

REFERENCES:
patent: 4845303 (1989-07-01), Bellut
patent: 4970191 (1990-11-01), Schutz
patent: 5276197 (1994-01-01), Nosberger et al.
patent: 5545761 (1996-08-01), Dawson et al.

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