Evidence map›Paper›PMID 40823732›Full record

ArticleChemSusChem2025

Synthesis of N-Substituted Pyrrole-2,5-Dicarboxylic Acids from d-Galactaric Acid.

Jan-Simon Jeshua Friedrichs, Kai Stirnweiß, Corinna Urmann, Volker Sieber

Abstract read
In one paragraph

Article in ChemSusChem, 2025. 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.

Jan-Simon Jeshua FriedrichsTUM Campus Straubing for Biotechnology and Sustainability, Technical University of Munich, Schulgasse 16, 94315, Straubing, Germany.ORCID https://orcid.org/0009-0006-4865-6115
Kai StirnweißTUM Campus Straubing for Biotechnology and Sustainability, Technical University of Munich, Schulgasse 16, 94315, Straubing, Germany.
Corinna UrmannTUM Campus Straubing for Biotechnology and Sustainability, Technical University of Munich, Schulgasse 16, 94315, Straubing, Germany.ORCID https://orcid.org/0000-0001-8895-9416
Volker SieberTUM Campus Straubing for Biotechnology and Sustainability, Technical University of Munich, Schulgasse 16, 94315, Straubing, Germany.ORCID https://orcid.org/0000-0001-5458-9330

Funding

Federal Ministry of Education and Research (Bundesministerium für Bildung und Forschung, BMBF)Pfiffig FZ: 031B1051C
6 · The paper itself

Abstract

Pyrrole-2,5-dicarboxylic acid (PDCA) and its N-substituted derivatives are interesting building blocks for macromolecular applications. However, only a few published procedures describe the synthesis of PDCA derivatives. These procedures often suffer from low yields, the formation of unwanted side products, harsh reaction conditions, the use of toxic and expensive reagents, or the unavailability of certain derivatives. Here, a facile and scalable six-step synthetic route is described, starting from biobased d-galactaric acid, for the production of N-alkylated and N-arylated PDCAs, achieving total yields of up to 45%. In addition, the E-factor of the presented synthesis route is decreased by a factor of 14 compared to already established methods.

Indexed as

carboxylationN‐alkylationpolyethylenfuranoatepyrrole‐2,5‐dicarboxylic acidpyrroles

Identifiers

PMID40823732
PMCPMC12487735

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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.