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Cyclobutanes in catalysis.

Tobias Seiser1, Tanguy Saget, Duc N Tran

  • 1Laboratory of Organic Chemistry, ETH Zurich, Wolfgang-Pauli-Strasse 10, CH-8093 Zurich, Switzerland.

Angewandte Chemie (International Ed. in English)
|July 28, 2011
PubMed
Summary
This summary is machine-generated.

Cyclobutanes, once underutilized, are now key reactive substrates in organic chemistry. Recent catalytic advancements, particularly transition-metal-catalyzed reactions, unlock their potential for creating valuable chemical building blocks.

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Area of Science:

  • Organic Chemistry
  • Catalysis
  • Synthetic Chemistry

Background:

  • Ring strain is a recognized driving force for chemical reactions, with oxiranes and cyclopropanes being extensively studied.
  • Cyclobutanes, four-membered-ring compounds, have historically been less developed as reactive substrates compared to smaller rings.
  • Recent years have seen a surge in the development of novel reactions involving cyclobutane substrates.

Purpose of the Study:

  • To review catalytic reactions that utilize cyclobutanes as reactive substrates.
  • To highlight the advancements in transforming four-membered-ring compounds.
  • To showcase the utility of cyclobutanes in generating versatile chemical building blocks.

Main Methods:

  • Examination of Lewis and Brønsted acid-catalyzed reactions involving cyclobutanes.
  • Review of enzymatic reactions utilizing four-membered-ring substrates.
  • Focus on transition-metal-catalyzed C-C bond-insertion and β-carbon-elimination processes.

Main Results:

  • Emergence of numerous useful reactions for four-membered-ring substrates in the past decade.
  • Demonstration of transition-metal catalysis enabling C-C bond insertion and β-carbon elimination in cyclobutanes.
  • These processes facilitate downstream reactions yielding diverse and valuable building blocks.

Conclusions:

  • Cyclobutanes are increasingly recognized as valuable reactive substrates due to advancements in catalysis.
  • Catalytic methods, especially transition-metal-catalyzed ones, are key to unlocking the synthetic potential of cyclobutanes.
  • The development of cyclobutane chemistry provides new avenues for synthesizing complex molecules and versatile building blocks.