i've found the patent at
http://www.departisnet.de (http://www.departisnet.de)
the hydrogenation is described as follows:
10 parts of the mixture are added to 100 parts diluted alcohol and 20 parts Ni-catalyst. the whole thing is shaked at 60°-70°C under H2 atmosphere till 1 Mol H2 was consumed. rxn mixture is filtered the filtercake washed with alcohol and the fluids evaporated under vacuum till dryness. hope this is a help to somebody
kalos kai agatos