Evidence map›Paper›PMID 42138627›Full record

ArticleOrganic letters2026

Synthesis of Oxacalix[4]arene and the Study of Its Dynamic Behavior.

Michal Churý, Karla Hovorková, Radek Staník, Václav Eigner, Jan Sýkora, Pavel Lhoták

Abstract read
In one paragraph

Article in Organic letters, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

6 authors.

Michal ChurýDepartment of Organic Chemistry, University of Chemistry and Technology Prague (UCTP), Technická 5, 166 28 Prague 6, Czech Republic.
Karla HovorkováDepartment of Organic Chemistry, University of Chemistry and Technology Prague (UCTP), Technická 5, 166 28 Prague 6, Czech Republic.
Radek StaníkDepartment of Organic Chemistry, University of Chemistry and Technology Prague (UCTP), Technická 5, 166 28 Prague 6, Czech Republic.
Václav EignerInstitute of Physics AS CR, v.v.i., Na Slovance 1999/2, 182 21 Prague 8, Czech Republic.
Jan SýkoraDepartment of Analytical Chemistry, UCTP, Technická 5, 166 28 Prague 6, Czech Republic.ORCID 0000-0002-2930-8880
Pavel LhotákDepartment of Organic Chemistry, University of Chemistry and Technology Prague (UCTP), Technická 5, 166 28 Prague 6, Czech Republic.ORCID 0000-0003-3617-6596

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The preparation of a new member of the mixed-bridged calixarenes, monooxacalix[4]arene, is described. The key step is the synthesis of an oxygen-bridged bisphenol, which was obtained by an Ullmann-type cross-coupling reaction using 2,2,6,6-tetramethylheptane-3,5-dione/CuI as a catalytic system in a microwave reactor. Final fragment condensation under high-dilution conditions allowed the isolation of oxacalix[4]arene in 36% yield. The dynamic behavior of the new macrocycle was studied using VT NMR experiments, and the energy barriers of the basic dynamic processes (

Identifiers

PMID42138627
PMCPMC13220344

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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.