Traceless Solid-Phase Synthesis of Ketones via Acid-Labile Enol Ethers: Application in the Synthesis of Natural Products and Derivatives

In solid-phase organic synthesis, Wang resin is traditionally used for the immobilization of acids, alcohols, phenols, and amines. We report the use of Wang resin for the traceless synthesis of ketones via acid-labile enol ethers. We demonstrate the practicality of this synthetic strategy on the sol...

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Main Authors: Eva Schütznerová, Anna Krchňáková, Viktor Krchňák
Format: Article
Language:English
Published: MDPI AG 2019-04-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/24/7/1406
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author Eva Schütznerová
Anna Krchňáková
Viktor Krchňák
author_facet Eva Schütznerová
Anna Krchňáková
Viktor Krchňák
author_sort Eva Schütznerová
collection DOAJ
description In solid-phase organic synthesis, Wang resin is traditionally used for the immobilization of acids, alcohols, phenols, and amines. We report the use of Wang resin for the traceless synthesis of ketones via acid-labile enol ethers. We demonstrate the practicality of this synthetic strategy on the solid-phase synthesis of pyrrolidine-2,4-diones, which represent the core structure of several natural products, including tetramic acid. Base-triggered condensation of pyrrolidine-2,4-diones yielded 4-hydroxy-1,1&#8242;,2&#8242;,5-tetrahydro-2<i>H</i>,5&#8242;<i>H</i>-[3,3&#8242;-bipyrrole]-2,5&#8242;-diones.
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spelling doaj.art-d29bbac36d014928bf955f96b58633772022-12-21T23:00:28ZengMDPI AGMolecules1420-30492019-04-01247140610.3390/molecules24071406molecules24071406Traceless Solid-Phase Synthesis of Ketones via Acid-Labile Enol Ethers: Application in the Synthesis of Natural Products and DerivativesEva Schütznerová0Anna Krchňáková1Viktor Krchňák2Department of Organic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 771 46 Olomouc, Czech RepublicDepartment of Chemistry and Biochemistry, 251 Nieuwland Science Center, University of Notre Dame, Notre Dame, IN 46556, USADepartment of Organic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 771 46 Olomouc, Czech RepublicIn solid-phase organic synthesis, Wang resin is traditionally used for the immobilization of acids, alcohols, phenols, and amines. We report the use of Wang resin for the traceless synthesis of ketones via acid-labile enol ethers. We demonstrate the practicality of this synthetic strategy on the solid-phase synthesis of pyrrolidine-2,4-diones, which represent the core structure of several natural products, including tetramic acid. Base-triggered condensation of pyrrolidine-2,4-diones yielded 4-hydroxy-1,1&#8242;,2&#8242;,5-tetrahydro-2<i>H</i>,5&#8242;<i>H</i>-[3,3&#8242;-bipyrrole]-2,5&#8242;-diones.https://www.mdpi.com/1420-3049/24/7/1406solid-phase synthesisketonetraceless synthesisnatural productsenol ethers
spellingShingle Eva Schütznerová
Anna Krchňáková
Viktor Krchňák
Traceless Solid-Phase Synthesis of Ketones via Acid-Labile Enol Ethers: Application in the Synthesis of Natural Products and Derivatives
Molecules
solid-phase synthesis
ketone
traceless synthesis
natural products
enol ethers
title Traceless Solid-Phase Synthesis of Ketones via Acid-Labile Enol Ethers: Application in the Synthesis of Natural Products and Derivatives
title_full Traceless Solid-Phase Synthesis of Ketones via Acid-Labile Enol Ethers: Application in the Synthesis of Natural Products and Derivatives
title_fullStr Traceless Solid-Phase Synthesis of Ketones via Acid-Labile Enol Ethers: Application in the Synthesis of Natural Products and Derivatives
title_full_unstemmed Traceless Solid-Phase Synthesis of Ketones via Acid-Labile Enol Ethers: Application in the Synthesis of Natural Products and Derivatives
title_short Traceless Solid-Phase Synthesis of Ketones via Acid-Labile Enol Ethers: Application in the Synthesis of Natural Products and Derivatives
title_sort traceless solid phase synthesis of ketones via acid labile enol ethers application in the synthesis of natural products and derivatives
topic solid-phase synthesis
ketone
traceless synthesis
natural products
enol ethers
url https://www.mdpi.com/1420-3049/24/7/1406
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AT annakrchnakova tracelesssolidphasesynthesisofketonesviaacidlabileenolethersapplicationinthesynthesisofnaturalproductsandderivatives
AT viktorkrchnak tracelesssolidphasesynthesisofketonesviaacidlabileenolethersapplicationinthesynthesisofnaturalproductsandderivatives