Evidence map›Paper›PMID 30380196›Full record

ArticleAngewandte Chemie (International ed. in English)2018

A Cooperative Hydrogen Bond Donor-Brønsted Acid System for the Enantioselective Synthesis of Tetrahydropyrans.

Mark A Maskeri, Matthew J O'Connor, Ashley A Jaworski, Anna V Bay, Karl A Scheidt

Abstract read
In one paragraph

Article in Angewandte Chemie (International ed. in English), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
3.5field-weighted citation impact, top 6% 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

7 citing papers in PubMed, 49 citations in OpenAlex.

  1. Catalytic Enantioselective Synthesis of 1,1-Disubstituted Isochromans.Journal of the American Chemical Society · 2026
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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 at 1 institution in 1 country.

Mark A MaskeriDepartment of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, Silverman Hall, Evanston, IL, 60208, USA.
Matthew J O'ConnorDepartment of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, Silverman Hall, Evanston, IL, 60208, USA.
Ashley A JaworskiDepartment of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, Silverman Hall, Evanston, IL, 60208, USA.
Anna V BayDepartment of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, Silverman Hall, Evanston, IL, 60208, USA.
Karl A ScheidtDepartment of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, Silverman Hall, Evanston, IL, 60208, USA.ORCID 0000-0003-4856-3569
Northwestern University · US

Funding

Supplement to Carbene Catalysis Strategies for Organic SynthesisR01GM073072 · NIGMS · NORTHWESTERN UNIVERSITY · PI SCHEIDT, KARL A · 2006 to 2018
$4.0M
NIGMS NIH HHS GM073072NIGMS NIH HHS R01 GM073072
6 · The paper itself

Abstract

Carbocations stabilized by adjacent oxygen atoms are useful reactive intermediates involved in fundamental chemical transformations. These oxocarbenium ions typically lack sufficient electron density to engage established chiral Brønsted or Lewis acid catalysts, presenting a major challenge to their widespread application in asymmetric catalysis. Leading methods for selectivity operate primarily through electrostatic pairing between the oxocarbenium ion and a chiral counterion. A general approach to new enantioselective transformations of oxocarbenium ions requires novel strategies that address the weak binding capabilities of these intermediates. We demonstrate herein a novel cooperative catalysis system for selective reactions with oxocarbenium ions. This new strategy has been applied to a highly selective and rapid oxa-Pictet-Spengler reaction and highlights a powerful combination of an achiral hydrogen bond donor with a chiral Brønsted acid.

Indexed as

CatalysisHydrogen BondingLewis AcidsMolecular StructurePyransStereoisomerismLewis AcidsPyranschiral phosphoric acidcooperative catalysishydrogen bondingoxocarbenium iontetrahydropyrans

Identifiers

PMID30380196
PMCPMC6419772
OpenAlexW2899189767

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.