Evidence map›Paper›PMID 36968255›Full record

ArticleJournal of physical organic chemistry2023

Spirocyclization enhances the Diels-Alder reactivities of geminally substituted cyclopentadienes and 4

Brian J Levandowski, Nile S Abularrage, Ronald T Raines

Abstract read
In one paragraph

Article in Journal of physical organic chemistry, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Taming the 1,5-sigmatropic shift across protonated spirocyclic 4Journal of physical organic chemistry · 2024
    Article
  2. Computational study of an oxetane 4Tetrahedron letters · 2023
    Article
  3. Bioorthogonal 4Chemical communications (Cambridge, England) · 2023
    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

3 authors.

Brian J LevandowskiDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States.ORCID 0000-0002-8139-9417
Nile S AbularrageDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States.ORCID 0000-0002-3112-2591
Ronald T RainesDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States.ORCID 0000-0001-7164-1719

Funding

STRUCTURE--FUNCTION ANALYSIS OF RIBONUCLEASE AR01GM044783 · NIGMS · UNIVERSITY OF WISCONSIN-MADISON · PI RAINES, RONALD T · 1990 to 2021
$7.1M
Developing Cyclopentadiene as a Reagent in Bioorthogonal ChemistryF32GM137543 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI LEVANDOWSKI, BRIAN · 2020 to 2022
$157k
NIGMS NIH HHS F32 GM137543NIGMS NIH HHS R01 GM044783
6 · The paper itself

Abstract

The Diels-Alder reactivity of 5-membered dienes is tunable through spirocyclization at the saturated center. As the size of the spirocycle decreases, the Diels-Alder reactivity increases with the cyclobutane spirocycle, spiro[3.4]octa-5,7-diene, being the most reactive. Density functional theory calculations suggest that spiro[3.4]octa-5,7-diene dimerizes 220,000-fold faster than 5,5-dimethylcyclopentadiene and undergoes a Diels-Alder reaction with ethylene 1,200-fold faster than 5,5-dimethylcyclopentadiene. These findings show that spirocyclization is an effective way to enhance the Diels-Alder reactivity of geminally substituted 5-membered dienes.

Indexed as

click chemistrycycloadditiondensity functional theoryDiels–Alder reactionspirocycle

Identifiers

PMID36968255
PMCPMC10038129

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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.