Fulgides

{
  "id": "MLC-T-CHM-004696",
  "term": "Fulgides",
  "field": "Chemistry",
  "definition": "Photochromic compounds that are dialkylidene (bis-methylene) derivatives of succinic anhydride, usually carrying aryl or heteroaryl groups on the exocyclic double bonds. On irradiation with UV light the colorless E form undergoes a six-electron electrocyclic ring closure to a colored cyclized isomer, and visible light reverses it. Their imide analogues are called fulgimides.",
  "subject": "Organic and Biomolecular Chemistry",
  "references": [
    "PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1336 (https://doi.org/10.1351/pac199567081307)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/fulgides/"
}