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Journal Articles Chemistry - A European Journal Year : 2021

Organo-polyoxometalate-Based Hydrogen-Bond Catalysis

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Debora Vilona
  • Function : Author
  • PersonId : 784993
  • IdRef : 223318043
Elise Dumont
Emmanuel Lacôte

Abstract

Several urea-inserted organo-polyoxometalates (POMs) derived from polyoxotungstovanadate [P2V3W15O61] 9- were prepared. The insertion of the carbonyl into the polyoxometallic framework activates the urea toward Hydrogen-bond catalysis. This was shown on the Friedel-Crafts arylation of trans-b-nitrostyrene. Modelling shows that the most stable form of the organo-POMs features an antiparallel arrangement of the two N-H bonds, but that the likely catalytically active parallel form is accessible at room temperature. Finally, it is possible that the oxo substituents next to the vanadium atoms may help the approach of the nucleophile via H-bonding.
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Dates and versions

hal-03376764 , version 1 (13-10-2021)

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  • HAL Id : hal-03376764 , version 1

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Debora Vilona, Moreno Lelli, Elise Dumont, Emmanuel Lacôte. Organo-polyoxometalate-Based Hydrogen-Bond Catalysis. Chemistry - A European Journal, inPress. ⟨hal-03376764⟩
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