C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 50/04 (2006.01) C07C 46/08 (2006.01)
Patent
CA 2339614
A process for the preparation of 2,3,5-trimethyl-p- benzoquinone by oxidation of 2,3,5- or 2,3,6- trimethylphenol using oxygen or a gas mixture containing oxygen in the presence of a two-phase liquid reaction medium composed of water and a neocarboxylic acid having 8 to 11 carbon atoms with a copper (II) halide-containing catalyst system at elevated temperature.
Huthmacher Klaus
Krill Steffen
Maassen Ralf
Degussa Ag
Degussa-Huls Aktiengesellschaft
Marks & Clerk
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