Wilkinson's catalyst [RhCl(PPh 3 ) 3 ] was heterogenized on common silica by the use of a grafting/anchoring technique. The immobilized catalyst showed high activity and selectivity in transfer hydrogenation reactions of a range of carbonyl compounds in 2-propanol. Reactions carried out in 2-...
With the homogeneous Wilkinson catalyst an 88% selectivity to cis pinane was also observed but only at 82% conversion. The use of a 1% Rh/Al 2 O 3 catalyst for this hydrogenation gave some unexpected results. There was a facile isomerization to α pinene which was not hydrogenated further....
The selectivity of hydrogenation of both substances was higher using heterogeneous catalyst in the case of phenylacetylene. In the case of phenylpropyne, no difference in selectivity using Wilkinson's catalyst in homogeneous or heterogeneous arrangement was observed. The type of immobilization has no ...
Catalytic hydrogenation of cyclohexene and 1-hexene with Wilkinson's Catalyst, RhCl(PPh/sub 3/)/sub 3/, is reported. The catalyst was selected because of its efficiency, selectivity, and availability. The rate of production of cyclohexane during the hydrogenation of cyclohexene under sequential ...
With the homogeneous Wilkinson catalyst an 88% selectivity to cis pinane was also observed but only at 82% conversion. The use of a 1% Rh/Al 2 O 3 catalyst for this hydrogenation gave some unexpected results. There was a facile isomerization to α pinene which was not hydrogenated further....