Evidence map›Paper›PMID 41495235›Full record

ArticleNature chemistry2026

The catalytic enantioselective [1,2]-Wittig rearrangement cascade of allylic ethers.

Tengfei Kang, Justin O'Yang, Kevin Kasten, Samuel S Allsop, Toby Lewis-Atwell, Elliot H E Farrar, Martin Juhl, David B Cordes, Aidan P McKay, Matthew N Grayson and 1 more

Abstract read
In one paragraph

Article in Nature chemistry, 2026. 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. Review
  2. The Catalytic Enantioselective Sommelet-Hauser Rearrangement.Journal of the American Chemical Society · 2026
    Article
  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

11 authors.

Tengfei KangEaStCHEM, School of Chemistry, University of St Andrews, St Andrews, UK.ORCID http://orcid.org/0000-0002-4616-5578
Justin O'YangEaStCHEM, School of Chemistry, University of St Andrews, St Andrews, UK.
Kevin KastenEaStCHEM, School of Chemistry, University of St Andrews, St Andrews, UK.ORCID http://orcid.org/0000-0003-1298-8784
Samuel S AllsopDepartment of Chemistry, University of Bath, Claverton Down, Bath, UK.
Toby Lewis-AtwellDepartment of Chemistry, University of Bath, Claverton Down, Bath, UK.ORCID http://orcid.org/0000-0002-0918-8754
Elliot H E FarrarDepartment of Chemistry, University of Bath, Claverton Down, Bath, UK.ORCID http://orcid.org/0000-0003-3350-2907
Martin JuhlEaStCHEM, School of Chemistry, University of St Andrews, St Andrews, UK.ORCID http://orcid.org/0000-0001-5395-9627
David B CordesEaStCHEM, School of Chemistry, University of St Andrews, St Andrews, UK.ORCID http://orcid.org/0000-0002-5366-9168
Aidan P McKayEaStCHEM, School of Chemistry, University of St Andrews, St Andrews, UK.ORCID http://orcid.org/0000-0002-8578-7054
Matthew N GraysonDepartment of Chemistry, University of Bath, Claverton Down, Bath, UK. M.N.Grayson@bath.ac.uk.ORCID http://orcid.org/0000-0003-2116-7929
Andrew D SmithEaStCHEM, School of Chemistry, University of St Andrews, St Andrews, UK. ads10@st-andrews.ac.uk.ORCID http://orcid.org/0000-0002-2104-7313

Funding

RCUK | Engineering and Physical Sciences Research Council (EPSRC) EP/R513155/1RCUK | Engineering and Physical Sciences Research Council (EPSRC) EP/S023437/1RCUK | Engineering and Physical Sciences Research Council (EPSRC) EP/T023643/1RCUK | Engineering and Physical Sciences Research Council (EPSRC) EP/W003724/1RCUK | Engineering and Physical Sciences Research Council (EPSRC) EP/W007517
6 · The paper itself

Abstract

The catalytic enantioselective [1,2]-Wittig rearrangement of allylic ethers constitutes a recognized synthetic challenge as it is traditionally considered to arise from a non-concerted reaction pathway via formation and recombination of radical pairs. Here we show a catalytic enantioselective solution to this challenge, demonstrating that [1,2]-Wittig products are generated via an alternative reaction cascade to traditional dogma. The developed process employs a chiral bifunctional iminophosphorane catalyst to promote an initial enantioselective [2,3]-sigmatropic rearrangement. A subsequent base-promoted, stereoconvergent, fragmentation-recombination process that proceeds with high enantiospecificity and retention of configuration, formally equivalent to a Woodward-Hoffmann forbidden thermal [1,3]-sigmatropic rearrangement, generates [1,2]-Wittig products in up to 97:3 enantiomeric ratio. Supported by extensive quantum chemistry calculations, this chirality transfer process will have broad implications for fundamental stereocontrol in organic transformations.

Identifiers

PMID41495235
PMCPMC13061636

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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.