Main Reaction: γ-Hydroxybutyric acid lactone + HI >> n-Butyric acid

Reference: PubMed ID: 13867384
Authors: BENTLEY R, BHATE DS, KEIL JG
Title: Tetronic acid biosynthesis in molds. I. Formation of carlosic and carolic acids in Penicillium charlesii.
Published: 1962 Mar

γ-Hydroxybutyric acid lactone + HI --> n-Butyric acid