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Hayashi rearrangement

Hayashi rearrangement

The Hayashi rearrangement is the chemical reaction of ortho-benzoylbenzoic acids catalyzed by sulfuric acid or phosphorus pentoxide.{{cite journal

The Hayashi rearrangement

This reaction proceeds through electrophilic acylium ion attack with a spiro intermediate.

:[[File:Hayashi rearrangementMechanism.svg|600px|Hayashi mechanism]]

References

References

  1. ''The Hayashi Rearrangement of Substituted o-Benzoylbenzoic Acids'' Reuben B. Sandin, Russell Melby, Robert Crawford, and Donald McGreer [[J. Am. Chem. Soc.]] '''1956''' pp 3817 - 3819; {{doi. 10.1021/ja01596a069
  2. ''Name Reactions: A Collection of Detailed Reaction Mechanisms'' By Jie Jack Li Published '''2003''' Springer {{ISBN. 3-540-40203-9
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