Evidence map›Paper›PMID 31183033›Full record

ArticleChemical science2019

A rhodium catalyzed cycloisomerization and tandem Diels-Alder reaction for facile access to diverse bicyclic and tricyclic heterocycles.

Yirong Zhou, Ali Nikbakht, Felix Bauer, Bernhard Breit

Abstract read
In one paragraph

Article in Chemical science, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Review
  2. 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.

Yirong ZhouInstitut für Organische Chemie und Biochemie , Albert-Ludwigs-Universität , Alberstr. 21 , 79104 Freiburg , Germany . Email: bernhard.breit@chemie.uni-freiburg.de.
Ali NikbakhtInstitut für Organische Chemie und Biochemie , Albert-Ludwigs-Universität , Alberstr. 21 , 79104 Freiburg , Germany . Email: bernhard.breit@chemie.uni-freiburg.de.
Felix BauerInstitut für Organische Chemie und Biochemie , Albert-Ludwigs-Universität , Alberstr. 21 , 79104 Freiburg , Germany . Email: bernhard.breit@chemie.uni-freiburg.de.
Bernhard BreitInstitut für Organische Chemie und Biochemie , Albert-Ludwigs-Universität , Alberstr. 21 , 79104 Freiburg , Germany . Email: bernhard.breit@chemie.uni-freiburg.de.ORCID 0000-0002-2514-3898

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A regioselective distal cycloisomerization of 1,6-allenenes was successfully developed to afford six-membered ring exocyclic 1,3-dienes employing a rhodium/diphosphine catalyst system. Deuterium labelling experiments and DFT calculations were performed to provide insights into the reaction mechanism of this unprecedented transformation. In addition, one-pot tandem Diels-Alder reactions with various dienophiles could readily construct diverse bicyclic and tricyclic nitrogen heterocycles, which are ubiquitous core scaffolds for a variety of natural products and bioactives. High efficiency and exclusive chemo and regioselectivities for a broad substrate scope were achieved under mild conditions using a low catalyst loading of 0.5 mol%.

Identifiers

PMID31183033
PMCPMC6521805

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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.