Evidence map›Paper›PMID 32364378›Full record

ArticleJournal of the American Chemical Society2020

Highly Enantioselective, Hydrogen-Bond-Donor Catalyzed Additions to Oxetanes.

Daniel A Strassfeld, Zachary K Wickens, Elias Picazo, Eric N Jacobsen

Open access · greenAbstract read
In one paragraph

Article in Journal of the American Chemical Society, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

24 citing papers in PubMed, 73 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Enantioselective Desymmetrization by Chiral Bifunctional H-Bonding Organocatalysts.Chemistry (Weinheim an der Bergstrasse, Germany) · 2025
    Review
  7. Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Recent Advances in Enantioselective Desymmetrizations of Prochiral Oxetanes.Chemistry (Weinheim an der Bergstrasse, Germany) · 2021
    Review
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 at 1 institution in 1 country.

Daniel A StrassfeldDepartment of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States.
Zachary K WickensDepartment of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States.ORCID 0000-0002-5733-5288
Elias PicazoDepartment of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States.
Eric N JacobsenDepartment of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States.ORCID 0000-0001-7952-3661
Harvard University · US

Funding

CHIRAL COMPLEXES DESIGNED TO CATALYZE ORGANIC REACTIONSR01GM043214 · NIGMS · UNIVERSITY OF ILLINOIS URBANA-CHAMPAIGN · PI JACOBSEN, ERIC N · 1991 to 2023
$9.4M
Chiral Catalysts Designed to Catalyze Organic ReactionsR37GM043214 · NIGMS · HARVARD UNIVERSITY · PI JACOBSEN, ERIC N · 2002 to 2011
$6.6M
Strategic Molecular Activations for the Selective Synthesis of 2-Deoxy-Beta-Glycosides, and for the Synthesis of Novel Donor-Acceptor Stenhouse AdductsK99GM140070 · NIGMS · HARVARD UNIVERSITY · PI PICAZO, ELIAS · 2021 to 2021
$100k
NIGMS NIH HHS K99 GM140070NIGMS NIH HHS R01 GM043214NIGMS NIH HHS R37 GM043214
6 · The paper itself

Abstract

A precisely designed chiral squaramide derivative is shown to promote the highly enantioselective addition of trimethylsilyl bromide (TMSBr) to a broad variety of 3-substituted and 3,3-disubstituted oxetanes. The reaction provides direct and general access to synthetically valuable 1,3-bromohydrin building blocks from easily accessed achiral precursors. The products are readily elaborated both by nucleophilic substitution and through transition-metal-catalyzed cross-coupling reactions. The enantioselective catalytic oxetane ring opening was employed as part of a three-step, gram-scale synthesis of pretomanid, a recently approved medication for the treatment of multidrug-resistant tuberculosis. Heavy-atom kinetic isotope effect (KIE) studies are consistent with enantiodetermining delivery of bromide from the H-bond-donor (HBD) catalyst to the activated oxetane. While the nucleophilicity of the bromide ion is expected to be attenuated by association to the HBD, overall rate acceleration is achieved by enhancement of Lewis acidity of the TMSBr reagent through anion abstraction.

Indexed as

CatalysisEthers, CyclicHydrogen BondingMolecular StructureQuinineStereoisomerismEthers, CyclicoxetaneQuininesquaramide

Identifiers

PMID32364378
PMCPMC7293824
OpenAlexW3021570698

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.