Evidence map›Paper›PMID 29573100›Full record

ArticleAngewandte Chemie (International ed. in English)2018

Trimethylsilyl-Protected Alkynes as Selective Cross-Coupling Partners in Titanium-Catalyzed [2+2+1] Pyrrole Synthesis.

Hsin-Chun Chiu, Ian A Tonks

Abstract read
In one paragraph

Article in Angewandte Chemie (International ed. in English), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
7.2field-weighted citation impact, top 2% of its field
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

34 citing papers in PubMed, 103 citations in OpenAlex.

  1. Catalytic Sulfur-Atom Transfer Enabled by a Bis(disulfide) Titanium Complex.Angewandte Chemie (International ed. in English) · 2026
    Article
  2. Article
  3. Article
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  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Selective propargylic C(spChemical science · 2021
    Article
  13. Marine Pyrrole Alkaloids.Marine drugs · 2021
    Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

2 authors at 1 institution in 1 country.

Hsin-Chun ChiuDepartment of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Sreet SE, Minneapolis, MN, 55455, USA.ORCID 0000-0002-9766-1133
Ian A TonksDepartment of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Sreet SE, Minneapolis, MN, 55455, USA.ORCID 0000-0001-8451-8875
University of Minnesota · US

Funding

Ti-Catalyzed Oxidative Amination ReactionsR35GM119457 · NIGMS · UNIVERSITY OF MINNESOTA · PI Ian Albert Tonks · 2016 to 2026
$4.4M
Upgrade of a 500 MHz NMR Spectrometer for Applications in Biomedical ResearchS10OD011952 · OD · UNIVERSITY OF MINNESOTA · PI HOYE, THOMAS R. · 2012 to 2012
$378k
NIGMS NIH HHS R35 GM119457NIH HHS S10 OD011952
6 · The paper itself

Abstract

Trimethylsilyl (TMS)-protected alkynes served as selective alkyne cross-coupling partners in titanium-catalyzed [2+2+1] pyrrole synthesis. Reactions of TMS-protected alkynes with internal alkynes and azobenzene under the catalysis of titanium imido complexes yielded pentasubstituted 2-TMS-pyrroles with greater than 90 % selectivity over the other nine possible pyrrole products. The steric and electronic effects of the TMS group were both identified to play key roles in this highly selective pyrrole synthesis. This strategy provides a convenient method to synthesize multisubstituted pyrroles as well as an entry point for further pyrrole diversification through facile modification of the resulting 2-silyl pyrrole products, as demonstrated through a short formal synthesis of the marine natural product lamellarin R.

Indexed as

AlkynesCatalysisCycloaddition ReactionMolecular StructurePyrrolesTitaniumTrimethylsilyl CompoundsAlkynesPyrrolesTitaniumTrimethylsilyl Compoundsalkynescycloadditionmulticomponent reactionspyrrolestitanium

Identifiers

PMID29573100
PMCPMC5964026
OpenAlexW2791954396

What OpenQuestion holds

Textmetadata
LicenceTDM
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.