Pauson-Khand reaction polymer-supported

Rhodium, " titanium,and tungsten " complexes have also been used for this reaction. The reaction can be promoted photochemically and the rate is enhanced by the presence of primary amines.Coordinating ligands also accelerate the reaction,polymer-supported promoters have been developed " and there are many possible variations in reaction conditions.The Pauson-Khand reaction has been done under heterogeneous reaction conditions, and with... 

Comely, A. C., Gibson, S. E., Hales, N. J. Polymer-supported cobalt carbonyl complexes as novel solid-phase catalysts of the Pauson-Khand reaction. Chem. Common. 2000, 305-306. 

Although this reaction usually requires stoichiometric amounts of the metal carbonyl, Kraft has shown that substoichiometric amounts can be used.3 3 jjer work, 35-50% of Co2(CO)8 was used under a nitrogen atmosphere, in dimethoxyethane with 3 equivalents of cyclohexylamine. Kraft and Bonaga also developed dodecacarbonyltetracobalt as a viable catalyst.3 4 j e use of amines to promote the reaction was mentioned above. Molecular sieves have also been used to promote the Pauson-Khand reaction,3 5 d high intensity ultrasound is also effective.3 6 Polymer-supported promoters of this reaction are also known. " ... 

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