Quinarenes

{
  "id": "MLC-T-CHM-009783",
  "term": "Quinarenes",
  "field": "Chemistry",
  "definition": "Conjugated hydrocarbons made of three carbocyclic rings in a row, in which a central six-membered quinonoid ring is joined at its 1,4-positions by exocyclic double bonds to two odd-membered rings whose sizes differ by two, for example five- and seven-membered rings. They are mancude, meaning they carry the maximum number of noncumulative double bonds. Quinodimethanes are the simpler relatives, with two methylene groups in place of the end rings.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "mancude-ring systems"
  ],
  "references": [
    "PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1362 (https://doi.org/10.1351/pac199567081307)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/quinarenes/"
}