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May 16, 2024

CRC 1333 Minisymposium on "Catalysis under Confinement"

REGISTER NOW – May 16, 2024

Minisymposium "Catalysis under Confinement"

Project B08

Probing precatalyst association by NMR

  • Project leader(s)
  • Team
Jun.-Prof. Dr. Deven Estes
Jun.-Prof. Dr. Deven Estes
University of Stuttgart
Erik Wimmer
Erik Wimmer
University of Stuttgart
  • Summary
  • Publications

Probing confinement enhanced precatalyst association in Pd catalyzed enyne cycloisomerizations by advanced NMR spectroscopy

– New project since July 2022 –

Palladium hydrides that catalyze enyne cycloisomerization reactions, typically formed in situ by reaction of weak Brönsted acids with Pd(0) complexes, are often only present in small equilibrium concentrations. The proportion of active catalyst as well as the catalytic selectivity can be, however, vastly increased through confinement due to the higher local concentration and interaction with the pore walls. In this project, we will use advanced MAS NMR techniques (such as HETCOR and REDOR) to observe the effect of confinement on the equilibrium of palladium hydride formation in pores and explain the effect on the catalytic activity and selectivity for enyne cycloisomerization.