Evidence map›Paper›PMID 34262059›Full record

ArticleScientific reports2021

Tetramethylguanidine-functionalized melamine as a multifunctional organocatalyst for the expeditious synthesis of 1,2,4-triazoloquinazolinones.

Mahnoush Keshavarz, Mohammad G Dekamin, Manouchehr Mamaghani, Mohammad Nikpassand

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
2.3field-weighted citation impact, top 12% 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

10 citing papers in PubMed, 25 citations in OpenAlex.

  1. Magnetic BiFeOScientific reports · 2026
    Article
  2. Article
  3. CaFeScientific reports · 2024
    Article
  4. Highly Luminescent TCNQ in Melamine.ACS applied optical materials · 2024
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
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

4 authors at 3 institutions in 1 country.

Mahnoush KeshavarzDepartment of Chemistry, Faculty of Basic Sciences, Rasht Branch , Islamic Azad University, P.O. Box 41335-3516, Rasht, Iran.
Mohammad G DekaminDepartment of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran. mdekamin@iust.ac.ir.
Manouchehr MamaghaniDepartment of Chemistry, Faculty of Sciences, University of Guilan, P.O. Box 41335-1914, Rasht, Iran. m-chem41@guilan.ac.ir.
Mohammad NikpassandDepartment of Chemistry, Faculty of Basic Sciences, Rasht Branch , Islamic Azad University, P.O. Box 41335-3516, Rasht, Iran.
Islamic Azad University Rasht Branch · IRIran University of Science and Technology · IRUniversity of Guilan · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Novel nano-ordered 1,1,3,3-tetramethylguanidine-functionalized melamine (Melamine@TMG) organocatalyst was prepared and adequately identified by various techniques including FTIR, EDX, XRD and SEM spectroscopic or microscopic methods as well as TGA and DTG analytical methods. The Melamine@TMG, as an effective multifunctional organocatalyst, was found to promote smoothly the three-component synthesis of 1,2,4-triazoloquinazolinone derivatives using cyclic dimedone, 3-amino-1,2,4-triazole and different benzaldehyde derivatives in EtOH at 40 °C. This practical method afforded the desired products in high to excellent yields (86-99%) and short reaction times (10-25 min). The main advantages of this new method are the use of heterogeneous multifunctional nanocatalyst, simple work-up procedure with no need for chromatographic purification, highly selective conversion of substrates and recyclability of the catalyst, which could be used in five consecutive runs with only a small decrease in its activity.

Identifiers

PMID34262059
PMCPMC8280119
OpenAlexW3182839181

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.