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Bench-Stable Nickel Precatalysts with Heck-type Activation.

Jessica M Weber1, Ashley R Longstreet1, Timothy F Jamison1

  • 1Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.

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|September 4, 2018
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Summary

Researchers developed new, stable nickel(II) precatalysts for carbonyl-ene coupling reactions. These phosphine-containing compounds activate via a Heck-type mechanism, offering a robust catalytic system.

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Area of Science:

  • Organometallic Chemistry
  • Catalysis

Background:

  • Nickel catalysis is crucial for various organic transformations.
  • Development of stable and active precatalysts remains an active research area.

Purpose of the Study:

  • To synthesize and characterize novel air- and moisture-stable nickel(II) precatalysts.
  • To investigate the catalytic activity of these precatalysts in carbonyl-ene coupling reactions.

Main Methods:

  • Synthesis of phosphine-containing nickel(II) complexes.
  • Characterization using spectroscopic and analytical techniques.
  • Evaluation of catalytic performance in carbonyl-ene coupling.

Main Results:

  • A new class of stable nickel(II) precatalysts was successfully synthesized.
  • The precatalysts exhibit activity in carbonyl-ene coupling reactions.
  • Activation proceeds via a Heck-type mechanism.

Conclusions:

  • The developed nickel(II) precatalysts offer a stable and effective platform for carbonyl-ene coupling.
  • The Heck-type activation pathway provides insights into the catalytic cycle.