Evidence map›Paper›PMID 31117717›Full record

ArticleOrganic letters2019

Kinetic Resolution of Cyclic Secondary Azides, Using an Enantioselective Copper-Catalyzed Azide-Alkyne Cycloaddition.

Juliana R Alexander, Amy A Ott, En-Chih Liu, Joseph J Topczewski

Abstract read
In one paragraph

Article in Organic letters, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing 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

9 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Enantioselective synthesis ofChemical science · 2020
    Article
  9. 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.

Juliana R AlexanderDepartment of Chemistry , University of Minnesota Twin Cities , Minneapolis , Minnesota 55455 , United States.
Amy A OttDepartment of Chemistry , University of Minnesota Twin Cities , Minneapolis , Minnesota 55455 , United States.ORCID 0000-0002-2018-3276
En-Chih LiuDepartment of Chemistry , University of Minnesota Twin Cities , Minneapolis , Minnesota 55455 , United States.
Joseph J TopczewskiDepartment of Chemistry , University of Minnesota Twin Cities , Minneapolis , Minnesota 55455 , United States.ORCID 0000-0002-9921-5102

Funding

Chiral α,α-Disubstituted Amine Synthesis by Dynamic Kinetic ResolutionR35GM124718 · NIGMS · UNIVERSITY OF MINNESOTA · PI TOPCZEWSKI, JOSEPH JOHN · 2017 to 2020
$1.5M
Upgrade of a 500 MHz NMR Spectrometer for Applications in Biomedical ResearchS10OD011952 · OD · UNIVERSITY OF MINNESOTA · PI HOYE, THOMAS R. · 2012 to 2012
$378k
NIGMS NIH HHS R35 GM124718NIH HHS S10 OD011952
6 · The paper itself

Abstract

An enantioselective copper-catalyzed azide-alkyne cycloaddition (E-CuAAC) is reported by kinetic resolution. Chiral triazoles were isolated in high yield with limiting alkyne (up to 97:3 enantiomeric ratio (er)). A range of substrates were tolerated (>30 examples), and the reaction was scaled to >1 g. The er of a triazole product could be enhanced by recrystallization and the recovered scalemic azide could be racemized and recycled. Recycling the azide allows efficient use of the undesired azide enantiomer.

Indexed as

AlkynesAzidesCopperCycloaddition ReactionHalogenationKineticsMolecular StructureStereoisomerismAlkynesAzidesCopper

Identifiers

PMID31117717
PMCPMC6631410

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.