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the claim
Allenes are capable of forming ring structures
the verdict
SUPPORTED
the evidence backs this
refutedsupported
the weight of evidence
8 sources for · 0 against

Multiple studies demonstrate that allenes readily participate in diverse cyclization and cycloaddition reactions to form various ring structures.

Evidence for · 8
Gold(I)-Catalyzed Cascade Cyclization Reactions of Allenynes for the Synthesis of Fused Cyclopropanes and Acenaphthenes.
2019 · cited by 40
Demonstrates gold-catalyzed cascade cyclization of allenynes to form fused cyclopropanes and acenaphthenes.
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The analysis

The retrieved papers consistently show that allenes can act as versatile intermediates in cyclization, annulation, and cycloaddition reactions, successfully forming various fused, medium-sized, and heterocyclic ring structures.

More for · 7
Comparative DFT study on the platinum catalyzed [3 + 2] and [2 + 2] cycloaddition reactions between the derivatives of allene and alkene
2019 · cited by 2
Details platinum-catalyzed [3+2] and [2+2] cycloaddition reactions of allene derivatives to yield cyclic structures.
Construction of Eight-Membered N-Heterocycles via Palladium-Catalyzed Cyclization of Allenyl Isocyanides.
2025 · cited by 2
Shows palladium-catalyzed cyclization of allenyl isocyanides to construct medium-sized eight-membered N-heterocycles.
Alkyne Cyclizations through Vinyl Cations and Stereoselective Allene Formation by Terpene Synthases.
2026 · cited by 0
Identifies naturally occurring macrocyclic allenes like scabrisporallene containing an allene function embedded in a ring.
Phosphine-Catalyzed Unsymmetric [2 + 2] Annulation of Allenyl Phosphonates for Highly Substituted Cyclobutenes.
2026 · cited by 0
Reports phosphine-catalyzed annulation of allenes for the efficient construction of substituted cyclobutenes.
Photochemical Cyclization of Tertiary Buta-2,3-dienamides to β-Lactams Upon Triplet Energy Transfer.
2026 · cited by 0
Details the photochemical cyclization of buta-2,3-dienamides into beta-lactams.
Alcohol-Directed Carboamination of Conjugated Enynes.
2026 · cited by 0
Notes that allene intermediates undergo versatile transformations including cyclization to form various heterocycles.
Dearomatization of Aromatic Carbonyl Compounds by Photocycloaddition Reactions to 1,1-Dimethylallene.
2026 · cited by 0
Describes photocycloaddition reactions of 1,1-dimethylallene to yield bicyclic ring systems.
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first checked04 Aug 2026
judged → SUPPORTED · 8504 Aug 2026
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