Evidence map›Paper›PMID 36364380›Full record

ReviewMolecules (Basel, Switzerland)2022

In Melting Points We Trust: A Review on the Misguiding Characterization of Multicomponent Reactions Adducts and Intermediates.

Brenno A D Neto, Pedro S Beck, Jenny E P Sorto, Marcos N Eberlin

Abstract readReview
In one paragraph

Review in Molecules (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Article
  2. Article
  3. 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

4 authors.

Brenno A D NetoLaboratory of Medicinal and Technological Chemistry, Institute of Chemistry (IQ-UnB), Campus Universitário Darcy Ribeiro, University of Brasília, Brasília 70910-900, DF, Brazil.ORCID 0000-0003-3783-9283
Pedro S BeckLaboratory of Medicinal and Technological Chemistry, Institute of Chemistry (IQ-UnB), Campus Universitário Darcy Ribeiro, University of Brasília, Brasília 70910-900, DF, Brazil.ORCID 0000-0003-4009-9001
Jenny E P SortoLaboratory of Medicinal and Technological Chemistry, Institute of Chemistry (IQ-UnB), Campus Universitário Darcy Ribeiro, University of Brasília, Brasília 70910-900, DF, Brazil.ORCID 0000-0003-0142-4203
Marcos N EberlinMackMass Laboratory, PPGENM, School of Engineering, Mackenzie Presbyterian University São Paulo, São Paulo 01302-907, SP, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We discuss herein the problems associated with using melting points to characterize multicomponent reactions' (MCRs) products and intermediates. Although surprising, it is not rare to find articles in which these MCRs final adducts (or their intermediates) are characterized solely by comparing melting points with those available from other reports. A brief survey among specialized articles highlights serious and obvious problems with this practice since, for instance, cases are found in which as many as 25 quite contrasting melting points have been attributed to the very same MCR adduct. Indeed, it seems logical to assume that the inherent non-confirmatory nature of melting points could be vastly misleading as a protocol for structural confirmation, but still many publications (also in the Q1 and Q2 quartiles) insist on using it. This procedure contradicts best practices in organic synthesis, and articles fraught with limitations and misleading conclusions have been published in the MCRs field. The drawbacks inherent to this practice are indeed serious and have misguided MCRs advances. We therefore suggest some precautions aimed at avoiding future confusions.

Indexed as

Chemistry Techniques, SyntheticTransition Temperaturecatalysismechanismsmelting pointsmulticomponent reactionsreview

Identifiers

PMID36364380
PMCPMC9656178

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.