Evidence map›Paper›PMID 34663806›Full record

ArticleNature communications2021

Conformer-specific polar cycloaddition of dibromobutadiene with trapped propene ions.

Ardita Kilaj, Jia Wang, Patrik Straňák, Max Schwilk, Uxía Rivero, Lei Xu, O Anatole von Lilienfeld, Jochen Küpper, Stefan Willitsch

Abstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing 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

9 citing papers in PubMed.

  1. Article
  2. Article
  3. The Diels-Alder Reaction as a Mechanistic Probe for Vibrational Strong Coupling.Angewandte Chemie (International ed. in English) · 2025
    Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
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

9 authors.

Ardita KilajDepartment of Chemistry, University of Basel, Klingelbergstrasse 80, 4056, Basel, Switzerland.ORCID http://orcid.org/0000-0001-9264-5364
Jia Wang *Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607, Hamburg, Germany.
Patrik Straňák *Department of Chemistry, University of Basel, Klingelbergstrasse 80, 4056, Basel, Switzerland.
Max SchwilkDepartment of Chemistry, University of Basel, Klingelbergstrasse 80, 4056, Basel, Switzerland.
Uxía RiveroDepartment of Chemistry, University of Basel, Klingelbergstrasse 80, 4056, Basel, Switzerland.
Lei XuDepartment of Chemistry, University of Basel, Klingelbergstrasse 80, 4056, Basel, Switzerland.
O Anatole von LilienfeldDepartment of Chemistry, University of Basel, Klingelbergstrasse 80, 4056, Basel, Switzerland.
Jochen KüpperCenter for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607, Hamburg, Germany. jochen.kuepper@cfel.de.ORCID http://orcid.org/0000-0003-4395-9345
Stefan WillitschDepartment of Chemistry, University of Basel, Klingelbergstrasse 80, 4056, Basel, Switzerland. stefan.willitsch@unibas.ch.ORCID http://orcid.org/0000-0002-8376-0579

Funding

EC | EU Framework Programme for Research and Innovation H2020 | H2020 Priority Excellent Science | H2020 European Research Council (H2020 Excellent Science - European Research Council) 772834EC | EU Framework Programme for Research and Innovation H2020 | H2020 Priority Excellent Science | H2020 Future and Emerging Technologies (H2020 Excellent Science - Future and Emerging Technologies) 957189Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (Swiss National Science Foundation) BSCGI0_157874Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (Swiss National Science Foundation) IZCOZ0_189907
6 · The paper itself

Abstract

Diels-Alder cycloadditions are efficient routes for the synthesis of cyclic organic compounds. There has been a long-standing discussion whether these reactions proceed via stepwise or concerted mechanisms. Here, we adopt an experimental approach to explore the mechanism of the model polar cycloaddition of 2,3-dibromo-1,3-butadiene with propene ions by probing its conformational specificities in the entrance channel under single-collision conditions in the gas phase. Combining a conformationally controlled molecular beam with trapped ions, we find that both conformers of the diene, gauche and s-trans, are reactive with capture-limited reaction rates. Aided by quantum-chemical and quantum-capture calculations, this finding is rationalised by a simultaneous competition of concerted and stepwise reaction pathways, revealing an interesting mechanistic borderline case.

Identifiers

PMID34663806
PMCPMC8523519

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.