Evidence map›Paper›PMID 34164042›Full record

ArticleChemical science2021

Asymmetric systematic synthesis, structures, and (chir)optical properties of a series of dihetero[8]helicenes.

Tomoyuki Yanagi, Takayuki Tanaka, Hideki Yorimitsu

Abstract read
In one paragraph

Article in Chemical science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

  1. Article
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  5. Article
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  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Enhanced Optical Properties of Azaborole Helicenes by Lateral and Helical Extension.Chemistry (Weinheim an der Bergstrasse, Germany) · 2022
    Article
  13. Article
  14. Article
  15. Sulfonium-aided coupling of aromatic rings via sigmatropic rearrangement.Proceedings of the Japan Academy. Series B, Physical and biological sciences · 2022
    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.

Tomoyuki YanagiDepartment of Chemistry, Graduate School of Science, Kyoto University Japan yori@kuchem.kyoto-u.ac.jp.
Takayuki TanakaDepartment of Chemistry, Graduate School of Science, Kyoto University Japan yori@kuchem.kyoto-u.ac.jp.ORCID https://orcid.org/0000-0001-8018-7984
Hideki YorimitsuDepartment of Chemistry, Graduate School of Science, Kyoto University Japan yori@kuchem.kyoto-u.ac.jp.ORCID https://orcid.org/0000-0002-0153-1888

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A series of dihetero[8]helicenes have been systematically synthesized in enantiomerically enriched forms by utilizing the characteristic transformations of the organosulfur functionality. The synthetic route begins with assembling a ternaphthyl common synthetic intermediate from 2-naphthol and bissulfinylnaphthalene through an extended Pummerer reaction followed by facile multi-gram-scale resolution. The subsequent cyclization reactions into dioxa- and dithia[8]helicenes take place with excellent axial-to-helical chirality conversion. Dithia[8]helicene is further transformed into the nitrogen and the carbon analogs by replacing the two endocyclic sulfur atoms

Identifiers

PMID34164042
PMCPMC8179410

What OpenQuestion holds

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Registered trials

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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.