✓ checked
trust me, bro:
here is the receipt.
the claim
Allenes are capable of forming ring structures
the verdict
SUPPORTED
the evidence backs this
Recorded sources
8 sources for · 0 against
Is it true that Allenes are capable of forming ring structures?
Yes. Multiple studies demonstrate that allenes readily participate in diverse cyclization and cycloaddition reactions to form various ring structures.
Verdict: SUPPORTED · 8 sources for, 0 against · Last checked
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.
Evidence for · 8
Demonstrates gold-catalyzed cascade cyclization of allenynes to form fused cyclopropanes and acenaphthenes.
Get citation
Ikeuchi, T., Inuki, S., Oishi, S., & Ohno, H. (2019). Gold(I)-Catalyzed Cascade Cyclization Reactions of Allenynes for the Synthesis of Fused Cyclopropanes and Acenaphthenes.. doi.org. https://doi.org/10.1002/anie.201903384
See more details
More for · 7
Details platinum-catalyzed [3+2] and [2+2] cycloaddition reactions of allene derivatives to yield cyclic structures.
Get citation
Saha, R., Chatterjee, A., Mondal, S., Pal, P., Chakrabarty, K., & Das, G. (2019). Comparative DFT study on the platinum catalyzed [3 + 2] and [2 + 2] cycloaddition reactions between the derivatives of allene and alkene. doi.org. https://doi.org/10.1016/J.COMPTC.2019.112507
Shows palladium-catalyzed cyclization of allenyl isocyanides to construct medium-sized eight-membered N-heterocycles.
Get citation
Zhao, H., Jiang, Y., Zhang, J., Pu, Y., Zeng, S., Ni, B., Shang, Y., & Wang, J. (2025). Construction of Eight-Membered N-Heterocycles via Palladium-Catalyzed Cyclization of Allenyl Isocyanides.. doi.org. https://doi.org/10.1021/acs.orglett.5c02371
Alkyne Cyclizations through Vinyl Cations and Stereoselective Allene Formation by Terpene Synthases.
Identifies naturally occurring macrocyclic allenes like scabrisporallene containing an allene function embedded in a ring.
Get citation
AC, T., H, X., B, G., & JS, D. (2026). Alkyne Cyclizations through Vinyl Cations and Stereoselective Allene Formation by Terpene Synthases.. doi.org. https://doi.org/10.1021/jacs.6c05306
Reports phosphine-catalyzed annulation of allenes for the efficient construction of substituted cyclobutenes.
Get citation
SH, S., SN, Y., H, L., ZY, D., Y, J., XP, H., & QA, C. (2026). Phosphine-Catalyzed Unsymmetric [2 + 2] Annulation of Allenyl Phosphonates for Highly Substituted Cyclobutenes.. doi.org. https://doi.org/10.1002/anie.7982002
Photochemical Cyclization of Tertiary Buta-2,3-dienamides to β-Lactams Upon Triplet Energy Transfer.
Details the photochemical cyclization of buta-2,3-dienamides into beta-lactams.
Get citation
J, H., MS, B., C, K., & T, B. (2026). Photochemical Cyclization of Tertiary Buta-2,3-dienamides to β-Lactams Upon Triplet Energy Transfer.. doi.org. https://doi.org/10.1002/anie.202525347
Notes that allene intermediates undergo versatile transformations including cyclization to form various heterocycles.
Get citation
H, S., DK, B., H, S., & J, W. (2026). Alcohol-Directed Carboamination of Conjugated Enynes.. doi.org. https://doi.org/10.1002/anie.6963888
Describes photocycloaddition reactions of 1,1-dimethylallene to yield bicyclic ring systems.
Get citation
L, O., J, Z., N, S., & T, B. (2026). Dearomatization of Aromatic Carbonyl Compounds by Photocycloaddition Reactions to 1,1-Dimethylallene.. doi.org. https://doi.org/10.1021/acs.orglett.6c00429
What does the evidence say?
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.
Receipt History
first checked04 Aug 2026
judged → SUPPORTED · 8504 Aug 2026
Anyone with this link can read the claim and its public receipt, including any
personal information in that text. Open permanent receipt.
Check your own claim
Challenge the receipt
Requests are recorded for review. This does not start an automatic check
or guarantee a response time.
Citation formatting by citeproc-js (Frank Bennett) and the Citation Style Language project. Source and licenses.
This receipt is an automated verdict against our published method · not an opinion about any author or publication.
Terms · Privacy · How verdicts work
Terms · Privacy · How verdicts work