Term: photorearrangement
https://doi.org/10.1351/goldbook.PT07460

Definition:
Photoisomerization involving changes in the arrangement of the atoms within the molecular species. It may lead to unstable isomers that react further by, e.g., dehydrogenation, deprotonation, or other reactions.

Note: Examples are photorearrangements of @A00224@ (other than cis-@C01092@ @P04622-2@), of cyclohex-2-enones, of endoperoxides, of thioarenes, the @D01745@ and others.

Related Terms:
1) alkenes (http://doi.org/10.1351/goldbook.A00224).
2) trans (http://doi.org/10.1351/goldbook.C01092).
3) photoisomerization (http://doi.org/10.1351/goldbook.P04622-2).
4) di-π-methane rearrangement (http://doi.org/10.1351/goldbook.D01745).
5) photoisomerization (http://doi.org/10.1351/goldbook.P04622-1).
6) unstable (http://doi.org/10.1351/goldbook.U06569).

Source: PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 398 (https://doi.org/10.1351/pac200779030293)

Citation: 'photorearrangement' 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.PT07460

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