| abstract |
The present invention comprises the following steps: a) 2,6-dimethyl-hydro-p-benzoquinone by hydrogenating 2,6-dimethyl-p-benzoquinone with hydrogen in the presence of a hydrogenation catalyst in an organic solvent. And b) reacting 2,6-dimethyl-hydro-p-benzoquinone with a secondary amine and formaldehyde in an organic solvent to produce 2,6-dimethyl-3- (N, N-disubstituted aminomethyl). ) -Hydro-p-benzoquinone; c) 2,6-dimethyl-3- (N, N-disubstituted aminomethyl) -hydro-p-benzoquinone in the presence of a hydrogenolysis catalyst in an organic solvent. A process for producing 2,3,5-trimethylhydro-p-benzoquinone by reacting hydrogen with hydrogen. a), b) an organic solvent in and c) are methyl tert. -Butyl ether, ethyl tert. -Butyl ether, methyl tert. -Relates to a process independently selected from the group consisting of amyl ether, methoxycyclopentane and any mixtures thereof. Preferably, the organic solvent used in all steps a), b) and c) is the same. |