Evidence map›Paper›PMID 37294032›Full record

ArticleAngewandte Chemie (International ed. in English)2023

Photochemically Mediated Ring Expansion of Indoles and Pyrroles with Chlorodiazirines: Synthetic Methodology and Thermal Hazard Assessment.

Ben W Joynson, Graham R Cumming, Liam T Ball

Open access · hybridAbstract read
In one paragraph

Article in Angewandte Chemie (International ed. in English), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
11.6field-weighted citation impact, top 1% 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

21 citing papers in PubMed, 78 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Pyridine C─N Transposition via Cycloaddition-Cycloreversion.Angewandte Chemie (International ed. in English) · 2026
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Synthesis of Thiophenes from Pyridines Using Elemental Sulfur.Angewandte Chemie (International ed. in English) · 2025
    Article
  13. Article
  14. The Versatility of Diazirines: Properties, Synthetic and Modern Applications.Chemistry (Weinheim an der Bergstrasse, Germany) · 2025
    Review
  15. Rh-Catalyzed Atroposelective Single-Carbon Insertion.Journal of the American Chemical Society · 2025
    Article
  16. Article
  17. Single-Carbon Insertion into Single C-C Bonds with Diazirines.Journal of the American Chemical Society · 2025
    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

3 authors at 2 institutions in 2 countries.

Ben W JoynsonSchool of Chemistry, University of Nottingham, Nottingham, NG7 2RD, UK.ORCID http://orcid.org/0009-0004-9147-9367
Graham R CummingCentro de Investigación Lilly S. A., Avda. de la Industria 30, Alcobendas, Madrid, 28108, Spain.ORCID http://orcid.org/0000-0003-1771-239X
Liam T BallSchool of Chemistry, University of Nottingham, Nottingham, NG7 2RD, UK.ORCID http://orcid.org/0000-0003-3849-9006
University of Nottingham · GBEli Lilly (Spain) · ES

Funding

Eli Lilly and CompanyUK Research and Innovation MR/V022067/1
6 · The paper itself

Abstract

We demonstrate that arylchlorodiazirines serve as photo-activated halocarbene precursors for the selective one-carbon ring expansion of N-substituted pyrroles and indoles to the corresponding pyridinium and quinolinium salts. Preliminary investigations indicate that the same strategy also enables the conversion of N-substituted pyrazoles to pyrimidinium salts. The N-substituent of the substrate plays an essential role in: (1) increasing substrate scope by preventing product degradation, (2) enhancing yields by suppressing co-product inhibition, and (3) activating the azinium products towards subsequent synthetic manipulations. This latter point is illustrated by subjecting the quinolinium salts to four complementary partial reductions, which provide concise access to ring-expanded products with different degrees of increased C(sp

Indexed as

DiazirinesDifferential Scanning CalorimetryPhotochemistryRing ExpansionSkeletal Editing

Identifiers

PMID37294032
PMCPMC11497286
OpenAlexW4379966994

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.