α-elimination 

https://doi.org/10.1351/goldbook.A00007
  1. A transformation of the general type:
    where the central atom Z is commonly carbon. The reverse reaction is called α-addition.
    Source:
    PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1088 [Terms] [Paper]
  2. General term applied to a reaction by which a group attached to the alpha carbon of an excited chromophore is expelled either as an odd electron species or as an ionic species.
    Note:
    This reaction should be distinguished from an alpha-(α-)cleavage.
    Source:
    PAC, 2007, 79, 293. (Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)) on page 302 [Terms] [Paper]
Citation: 'α-elimination' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.A00007 RIS BibTex EndNote
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Last revised: February 24, 2014