Term: photo-Claisen rearrangement
https://doi.org/10.1351/goldbook.PT07449

Definition:
Rearrangement closely related to the photo-Fries rearrangement; it is experienced by aryl ethers (instead of aryl esters) and follows an analogous mechanism.

Note: An example is the photoinduced @R05194-2@ of phenyl @E02221@ to ortho and para-alkyl @P04539@. PT07449.png

Related Terms:
1) rearrangement (http://doi.org/10.1351/goldbook.R05194-2).
2) ethers (http://doi.org/10.1351/goldbook.E02221).
3) phenols (http://doi.org/10.1351/goldbook.P04539).
4) rearrangement (http://doi.org/10.1351/goldbook.R05194-1).
5) photo-fries rearrangement (http://doi.org/10.1351/goldbook.P04614).
6) esters (http://doi.org/10.1351/goldbook.E02219).

Image: Photo-Claisen rearrangement (https://goldbook.iupac.org/img/inline/PT07449.png) 

Source: PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 387 (https://doi.org/10.1351/pac200779030293)

Citation: 'photo-Claisen rearrangement' 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.PT07449

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