Hydrogenation, hydrosilylation and hydroformylation of olefins catalysed by polymer-supported rhodium complexes

Polymer-Attached Catalysts

“…Thus, a catalytic solution of Wilkinson's complex, RhCl(PPh3 h, loses its catalytic activity on exposure to air. However, when the complex is supported on polystyrene resin, it can be employed in air without deactivation [69]. Similarly, a solution of CuAlCl4 in toluene will adsorb carbon monoxide from a mixed gas system.…”

Polymeric siloxyphosphine rhodium(I) complexes as hydrogenation catalysts

“…1 there is not much difference between the behaviour of the homo-or copolymers of a given type with the exception of B(8,O) which is appreciably less active than B (8,lOO). This behaviour is changed little by preconditioning the polymer in benzene suspension under an atmosphere of hydrogen prior to the addition of styrene (Fig.…”

“…A double manifold apparatus was used (1-4) (polystyrene derivatives or silica for hydrogenation reactions carried out at 1 atm. Usually a few reactions were carried out simultaneously in 25mL roundare often 'lefin hydrogenation rates appear bottomed flasks equipped with a Teflon-rubber septum plug and beinfluenced by the same factors as are observedin magnetic stirrer and connected to the apparatus via a waterhomogeneous solution (5)(6)(7)(8)(9)(10). However, the activ-cooled condenser (17).…”

Heterogeneous, Homogeneous, and Enzymatic Catalysis. A Shared Terminology and Conceptual Platform. The Alternative of Time‐Dependence in Catalysis

“…For example, whereas Wilkinson's catalyst, RhCl(PPh 3 ) 3 , loses its catalytic activity when exposed to air in open solution, it remains catalytically active if supported on a polystyrene resin [7].…”