KnowraCyclopentadieneLinked fromLinked fromThe 4 pages that link to Cyclopentadiene, each with the reason it gives.All 4Broader topic 1Related 3Cyclopentadienyl anionRelated: Removing a proton from its methylene group creates the aromatic anion.Otto DielsRelated: Its reactions helped reveal the characteristic ring-forming behavior of conjugated dienes.Kurt AlderRelated: Its rapid dimerization became a classic demonstration of the reaction’s ring-forming power.