Oxa-di-π-methane rearrangement

{
  "id": "MLC-T-CHM-008388",
  "term": "Oxa-di-π-methane rearrangement",
  "field": "Chemistry",
  "definition": "A photochemical reaction involving a 1,4-diene system containing an oxygen atom within the diene framework, which undergoes rearrangement upon irradiation to form a cyclopropyl ketone. This reaction is analogous to the di-π-methane rearrangement but with an oxygen atom replacing one of the carbon atoms in the diene system. It proceeds through a triplet excited state and involves a series of radical intermediates.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "di-π-methane rearrangement",
    "photochemical reaction"
  ],
  "references": [
    "PAC, 1996, 68, 2223. 'Glossary of terms used in photochemistry (IUPAC Recommendations 1996)' on page 2258 (https://doi.org/10.1351/pac199668122223)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/oxa-di-p-methane-rearrangement/"
}