Process for the preparation of salcomine as well as the...

Details Process for the preparation of salcomine as well as the... Process for the preparation of salcomine as well as the...

C - Chemistry, Metallurgy

07

C

260/396, 260/429

C07C 50/04 (2006.01) C07C 46/08 (2006.01) C07F 15/06 (2006.01)

Patent

CA 1250307

IMPROVED PROCESS FOR THE PREPARATION OF SALCOMINE AS WELL AS THE PREPARATION OF TRIMETHYL-p-BENZOQUINONE FROM TRIMETHYLPHENOL USING THE RESULTANT SALCOMINE Abstract of the Disclosuore Improved process for the preparation of salcomine useful as an oxidation catalyst for the oxidation of alkylated phenols to the corresponding alkylated p-benzo- quinones by reacting salicylaldehyde with ethylenediamine in a mole ratio of about 2:1 and a cobalt salt in a liquid reaction medium wherein the reaction medium is a linear or cyclic carboxamide which is disubstituted on the nitrogen, in particular dimethylformamide, and the cobalt salt is cobalt carbonate or with the cobalt hydroxide carbonate, 2 CoCO3.3 Co(OH)2.H2O. Preparation of the salcomine in accordance with the invention offers significant advantages, both in the preparation of the salcomine itself and in the subsequent oxidation of the trimethylphenol to trimethyl-p- benzoquinone utilizing the salcomine.

446005

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