Evidence map›Paper›PMID 34286965›Full record

ArticleJournal of the American Chemical Society2021

Carbon Atom Insertion into Pyrroles and Indoles Promoted by Chlorodiazirines.

Balu D Dherange, Patrick Q Kelly, Jordan P Liles, Matthew S Sigman, Mark D Levin

Abstract read
In one paragraph

Article in Journal of the American Chemical Society, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 77 papers.

0numbers the graph read from it
0cells of the map it votes in
77citing 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

77 citing papers in PubMed.

  1. Article
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  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Pyridine C─N Transposition via Cycloaddition-Cycloreversion.Angewandte Chemie (International ed. in English) · 2026
    Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

17 more citing papers are in PubMed but not listed here.

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

5 authors.

Balu D DherangeDepartment of Chemistry, University of Chicago, Chicago, Illinois 60637, United States.ORCID 0000-0002-4123-5012
Patrick Q KellyDepartment of Chemistry, University of Chicago, Chicago, Illinois 60637, United States.
Jordan P LilesDepartment of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States.
Matthew S SigmanDepartment of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States.ORCID 0000-0002-5746-8830
Mark D LevinDepartment of Chemistry, University of Chicago, Chicago, Illinois 60637, United States.ORCID 0000-0002-4461-363X

Funding

Data Science Guided Organic Reaction DevelopmentR35GM136271 · NIGMS · UTAH STATE HIGHER EDUCATION SYSTEM--UNIVERSITY OF UTAH · PI MATTHEW S SIGMAN · 2020 to 2026
$3.5M
NIGMS NIH HHS R35 GM136271
6 · The paper itself

Abstract

Herein, we report a reaction that selectively generates 3-arylpyridine and quinoline motifs by inserting aryl carbynyl cation equivalents into pyrrole and indole cores, respectively. By employing α-chlorodiazirines as thermal precursors to the corresponding chlorocarbenes, the traditional haloform-based protocol central to the parent Ciamician-Dennstedt rearrangement can be modified to directly afford 3-(hetero)arylpyridines and quinolines. Chlorodiazirines are conveniently prepared in a single step by oxidation of commercially available amidinium salts. Selectivity as a function of pyrrole substitution pattern was examined, and a predictive model based on steric effects is put forward, with DFT calculations supporting a selectivity-determining cyclopropanation step. Computations surprisingly indicate that the stereochemistry of cyclopropanation is of little consequence to the subsequent electrocyclic ring opening that forges the pyridine core, due to a compensatory homoaromatic stabilization that counterbalances orbital-controlled torquoselectivity effects. The utility of this skeletal transform is further demonstrated through the preparation of quinolinophanes and the skeletal editing of pharmaceutically relevant pyrroles.

Indexed as

AzirinesCarbonDensity Functional TheoryIndolesMolecular StructurePyrrolesAzirinesCarbonIndolesPyrroles

Identifiers

PMID34286965
PMCPMC8343525

What OpenQuestion holds

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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.