Evidence map›Paper›PMID 32314851›Full record

ArticleAngewandte Chemie (International ed. in English)2020

A Vinyl Cyclopropane Ring Expansion and Iridium-Catalyzed Hydrogen Borrowing Cascade.

Simon Wübbolt, Choon Boon Cheong, James R Frost, Kirsten E Christensen, Timothy J Donohoe

Abstract read
In one paragraph

Article in Angewandte Chemie (International ed. in English), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing 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

4 citing papers in PubMed.

  1. Bio-Based Surfactants via Borrowing Hydrogen Catalysis.Chemistry (Weinheim an der Bergstrasse, Germany) · 2025
    Article
  2. Review
  3. Article
  4. 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

5 authors.

Simon WübboltChemistry Research Laboratory, University of Oxford, Oxford, OX1 3TA, UK.
Choon Boon CheongChemistry Research Laboratory, University of Oxford, Oxford, OX1 3TA, UK.
James R FrostChemistry Research Laboratory, University of Oxford, Oxford, OX1 3TA, UK.
Kirsten E ChristensenChemistry Research Laboratory, University of Oxford, Oxford, OX1 3TA, UK.
Timothy J DonohoeChemistry Research Laboratory, University of Oxford, Oxford, OX1 3TA, UK.ORCID http://orcid.org/0000-0001-7088-6626

Funding

A Star SingaporeDeutsche Forschungsgemeinschaft WU 942/1-1Engineering and Physical Sciences Research Council EP/L023121/1
6 · The paper itself

Abstract

A vinyl cyclopropane rearrangement embedded in an iridium-catalyzed hydrogen borrowing reaction enabled the formation of substituted stereo-defined cyclopentanes from Ph* methyl ketone and cyclopropyl alcohols. Mechanistic studies provide evidence for the ring-expansion reaction being the result of a cascade based on oxidation of the cyclopropyl alcohols, followed by aldol condensation with the pentamethyl phenyl-substituted ketone to form an enone containing the vinyl cyclopropane. Subsequent single electron transfer (SET) to this system initiates a rearrangement, and the catalytic cycle is completed by reduction of the new enone. This process allows for the efficient formation of diversely substituted cyclopentanes as well as the construction of complex bicyclic carbon skeletons containing up to four contiguous stereocentres, all with high diastereoselectivity.

Indexed as

catalysiscyclopentanehydrogen borrowingiridiumrearrangement

Identifiers

PMID32314851
PMCPMC7463175

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.