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Why Woodward and Hoffmann? And Why 1965?

Jeffrey I Seeman1

  • 1Department of Chemistry, University of Richmond, Richmond, VA 23173, USA.

Chemical Record (New York, N.Y.)
|January 11, 2023
PubMed
Summary

The collaboration between Woodward and Hoffmann in 1965 led to the development of orbital symmetry rules, explaining the mechanisms of pericyclic reactions like cycloadditions and rearrangements.

Area of Science:

  • Organic Chemistry
  • Chemical History

Background:

  • The pericyclic reaction mechanism problem remained unsolved prior to 1965.
  • Woodward and Hoffmann were identified as suitable candidates to address this challenge.

Purpose of the Study:

  • To elucidate the specific reasons behind the successful collaboration of R. B. Woodward and Roald Hoffmann.
  • To explain the synergistic factors contributing to their groundbreaking work on pericyclic reactions.

Main Methods:

  • Historical analysis of the scientific context and individual contributions.
  • Examination of the collaborative dynamics between Woodward and Hoffmann.

Main Results:

  • The synergy between Woodward and Hoffmann's unique capabilities and experiences was fundamental to solving the mechanistic problem.
Keywords:
History of chemistryWoodward-Hoffmann rulesinterdisciplinary collaborationspericyclic reactionssociology of chemistry

Related Experiment Videos

  • Their joint efforts resulted in the formulation of orbital symmetry rules in 1965.
  • These rules successfully explained the mechanisms of concerted pericyclic reactions.

    • Conclusions:

    • The timing and collaborative synergy were crucial for the development of the Woodward-Hoffmann rules.
    • The rules provided a unified mechanistic explanation for various pericyclic reactions, including electrocyclizations, cycloadditions, and sigmatropic rearrangements.