Fluorenyl Cations: Synthesis and Reactivity.

Kanika Vashisth, Sameera Ranasinghe, Ayesha Begum, Manjur O Akram, Jason L Dutton, Caleb D Martin

Abstract readReview

In one paragraph

Review in Chemistry (Weinheim an der Bergstrasse, Germany), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it

0cells of the map it votes in

0citing papers in PubMed

–field-weighted citation impact

1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Kanika VashisthDepartment of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, TX, 76798, USA.

Sameera RanasingheDepartment of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, TX, 76798, USA.

Ayesha BegumDepartment of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, TX, 76798, USA.

Manjur O AkramDepartment of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, TX, 76798, USA.

Jason L DuttonDepartment of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, 3086, Australia.

Caleb D MartinDepartment of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, TX, 76798, USA.ORCID https://orcid.org/0000-0001-9681-0160

Funding

Australian Research Council DP200100013National Science Foundation 2349851Welch Foundation AA-2203-20240404

6 · The paper itself

Abstract

This review covers the history of fluorenyl cations from Deno's first report in 1954 on the parent fluorenyl cation to the present. The parent cation and most derivatives have only been observed as a fleeting species by mass spectrometry, UV/Vis spectroscopy, IR spectroscopy, or NMR spectroscopy. The most common synthetic routes to fluorenyl cations are by dehydroxylation and halide abstraction of substituted fluorenyl precursors. Over the 71 year history, many advancements have been made with recent developments leading to isolable species including two characterized by X-ray diffraction. The scope of this review covers the field of fluorenyl cations in addition to related species with different aromatic groups in place of benzene fused to the cycopentadienyl core.

Indexed as

carbocationfluorenyl cationreactive intermediate

Identifiers

PMID40503853

DOI10.1002/chem.202501557

PMCPMC12284622

What OpenQuestion holds

Textmetadata

LicenceCC BY-NC

Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.