Evidence map›Paper›PMID 22924394›Full record

ArticleJournal of the American Chemical Society2012

Scope and mechanistic analysis of the enantioselective synthesis of allenes by rhodium-catalyzed tandem ylide formation/[2,3]-sigmatropic rearrangement between donor/acceptor carbenoids and propargylic alcohols.

Zhanjie Li, Vyacheslav Boyarskikh, Jørn H Hansen, Jochen Autschbach, Djamaladdin G Musaev, Huw M L Davies

Abstract read
In one paragraph

Article in Journal of the American Chemical Society, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
8.4field-weighted citation impact, top 2% of its field
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

29 citing papers in PubMed, 196 citations in OpenAlex.

  1. Article
  2. Chiral ruthenium complex/PhScience advances · 2025
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  15. Article
  16. Review
  17. Isothiourea-Catalyzed Acylative Kinetic Resolution of Tertiary α-Hydroxy Esters.Angewandte Chemie (International ed. in English) · 2020
    Article
  18. Article
  19. Enantiodivergent Synthesis of Allenes by Point-to-Axial Chirality Transfer.Angewandte Chemie (International ed. in English) · 2018
    Article
  20. 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

6 authors at 3 institutions in 1 country.

Zhanjie LiDepartment of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, USA.
Vyacheslav Boyarskikh
Jørn H Hansen
Jochen Autschbach
Djamaladdin G Musaev
Huw M L Davies
Emory University · USAtlanta University Center · USUniversity at Buffalo, State University of New York · US

Funding

N-Sulfonyltriazoles as Carbene PrecursorsR01GM099142 · NIGMS · EMORY UNIVERSITY · PI DAVIES, HUW M · 2011 to 2023
$4.1M
NIGMS NIH HHS GM099142NIGMS NIH HHS R01 GM099142
6 · The paper itself

Abstract

Rhodium-catalyzed reactions of tertiary propargylic alcohols with methyl aryl- and styryldiazoacetates result in tandem reactions, consisting of oxonium ylide formation followed by [2,3]-sigmatropic rearrangement. This process competes favorably with the standard O-H insertion reaction of carbenoids. The resulting allenes are produced with high enantioselectivity (88-98% ee) when the reaction is catalyzed by the dirhodium tetraprolinate complex, Rh(2)(S-DOSP)(4). Kinetic resolution is possible when racemic tertiary propargylic alcohols are used as substrates. Under the kinetic resolution conditions, the allenes are formed with good diastereoselectivity and enantioselectivity (up to 6.1:1 dr, 88-93% ee), and the unreacted alcohols are enantioenriched to 65-95% ee. Computational studies reveal that the high asymmetric induction is obtained via an organized transition state involving a two-point attachment: ylide formation between the alcohol oxygen and the carbenoid and hydrogen bonding of the alcohol to a carboxylate ligand. The 2,3-sigmatropic rearrangement proceeds through initial cleavage of the O-H bond to generate an intermediate with close-lying open-shell singlet, triplet, and closed-shell singlet electronic states. This intermediate would have significant diradical character, which is consistent with the observation that the 2,3-sigmatropic rearrangement is favored with donor/acceptor carbenoids and more highly functionalized propargylic alcohols.

Indexed as

AlkadienesAlkynesCatalysisHydrogen BondingKineticsPropanolsRhodiumStereoisomerismAlkadienesAlkynespropadienePropanolspropargyl alcoholRhodium

Identifiers

PMID22924394
PMCPMC3549399
OpenAlexW2165260694

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Registered trials

None linked

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.