Skip to main content
Chemistry LibreTexts

21.16: Cyclic Hemiacetals

  • Page ID
    28289
  • Formation of Cyclic Hemiacetal and Acetals

    Molecules which have an alcohol and a carbonyl can undergo an intramolecular reaction to form a cyclic hemiacetal.

    14.jpg

    Intramolecular Hemiacetal formation is common in sugar chemistry. For example, the common sugar glucose exists in the cylcic manner more than 99% of the time in a mixture of aqueous solution.

    15.jpg

    Carbonyls reacting with diol produce a cyclic acetal. A common diol used to form cyclic acetals is ethylene glycol.

    16.jpg

    ContributorsEdit section

    • Was this article helpful?