Homogeneous Models for Mechanisms of Surface Reactions: Propene Ammoxidation

Part of the NATO ASI Series book series (ASIC, volume 231)


The proposed active sites on the surface of the catalyst for propene ammoxidation have been successfully modeled by structurally characterized pinacolato W(VI) tert-butyl imido complexes. These compounds exist as an equilibrating mixture of amine-bis(imido) and imido-bis(amido) complexes, the position of this equilibrium being dependent on the electronic nature of the glycolate ligand. Both of the C-N bond-forming reactions proposed in recent studies by Kartisek and Grasselli [J. Catal. 81, 489 (1983)] have been reproduced using discrete Group VI d° organoimido complexes under mild conditions suitable for detailed mechanistic studies. These reactions are 1) oxidative trapping of radicals at molybdenum imido sites and 2) migration of the allyl group from oxygen to an imido nitrogen atom.


Allylic Alcohol Propargylic Alcohol Propene Ammoxidation Homogeneous Analogue Imido Group 
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Copyright information

© Kluwer Academic Publishers 1988

Authors and Affiliations

  1. 1.Central Research and Development Department, Experimental StationE. I. du Pont de Nemours & Co.WilmingtonUSA

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