| abstract |
(57) [Summary] [Structure] At least one endocyclic carbon-carbon double bond and at least one terminal exocyclic carbon-carbon double bond which is not conjugated to the double bond. A process for the selective hydrogenation of a polyunsaturated cyclic compound comprising a mixture to a mixture comprising a compound having a saturated ring and having at least one terminal exocyclic double bond in the presence of a catalyst. Method of contacting a polyunsaturated cyclic compound with a carrier and a catalyst containing the following at 1 to 10 MPa and a temperature of 0 to 100 ° C .: (a) Ir, Os, Ni, Pd, Pt, Rh 0.1 to 5% by weight of a metal selected from the group consisting of: (b) 0.01 to 15% by weight of a metal selected from the group consisting of Sn, Ge, Pb, wherein ) And the molar ratio is 0.3 to 3. [Effect] 4-vinylcyclohexene can be selectively hydrogenated to vinylcyclohexane in a single step. |