Title: cyclic acid anhydrides
Long Title: IUPAC Gold Book - cyclic acid anhydrides
DOI: 10.1351/goldbook.C01492
Status: current

Definition
Acid anhydrides derived by loss of water between two oxoacid functions $\ce{R_{k}E(=O)_{l}(OH)_{m}}$ ($l \neq 0$) (carboxylic, sulfonic, etc.) in the same molecule so as to close a ring. Oxo oxygen replacement analogues are included, e.g. 

Related Terms
- Acid anhydrides: https://goldbook.iupac.org/terms/view/A00072
- thioanhydrides: https://goldbook.iupac.org/terms/view/T06351

Source
- PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1329 (https://doi.org/10.1351/pac199567081307)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/C01492/html
- json: https://goldbook.iupac.org/terms/view/C01492/json
- xml: https://goldbook.iupac.org/terms/view/C01492/xml

Citation: Citation: 'cyclic acid anhydrides' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.C01492
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Accessed: 2026-07-23T02:56:49+00:00