Wittig horner reaction
The Horner–Wadsworth–Emmons reaction (or HWE reaction) is the chemical reaction of stabilized phosphonate carbanions with aldehydes (or ketones) to produce predominantly E-alkenes.
In 1958, Leopold Horner published a modified Wittig reaction using phosphonate-stabilized carbanions.William S. Wadsworth and William D. Emmons further defined the reaction.
In contrast to phosphonium ylides used in the Wittig reaction, phosphonate-stabilized carbanions are more nucleophilic but less basic. Likewise, phosphonate-stabilized carbanions can be alkylated. Unlike phosphonium ylides, the dialkylphosphate salt byproduct is easily removed by aqueous extraction.
Several reviews have been published.

This is an excerpt from the article Wittig horner reaction from the Wikipedia free encyclopedia. A list of authors is available at Wikipedia.
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Horner-Wadsworth-Emmons Reaction
Nov 23, 2014 ... Horner-Wadsworth-Emmons Reaction. "Olefin Synthesis with Organic ... Stabilized Wittig reagents react only with aldehydes. Preparation of ...
www.chem.wisc.edu/areas/reich/chem547/1-carbonyl%7B19%7D.htm
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Mechanism of the Phospha‐Wittig–Horner Reaction
May 7, 2013 ... Mechanism of the Phospha-Wittig–Horner Reaction†. Anna I. Arkhypchuk,; Dr. Yurii V. Svyaschenko,; Dr. Andreas Orthaber and; Dr. Sascha Ott ...
onlinelibrary.wiley.com/doi/10.1002/anie.201301469/abstract
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Mechanism of the Phospha-Wittig–Horner Reaction **
The phospha-Wittig–Horner reaction (top), for which the mechanism is unknown, and the carbon-analogue Horner–Wadsworth–Emmons reaction (bottom).
www.ncbi.nlm.nih.gov/pmc/articles/PMC3738942/
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Wittig-Horner Reaction - Organic Chemistry Portal
Wittig-Horner Reaction Horner-Wadsworth-Emmons Reaction. The reaction of aldehydes or ketones with stabilized phosphorus ylides (phosphonate ...
www.organic-chemistry.org/namedreactions/wittig-horner-reaction.shtm
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Horner–Wadsworth–Emmons reaction - Wikipedia, the free ...
In 1958, Leopold Horner published a modified Wittig reaction using ... used in the Wittig reaction, phosphonate-stabilized carbanions are more nucleophilic but ...
en.wikipedia.org/wiki/Horner%E2%80%93Wadsworth%E2%80%93Emmons_reaction
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Wittig & Horner-Emmons Reaction | TCI America
Wittig and Horner-Emmons reactions are useful reactions which react with aldehydes and ketones to form carbon-carbon double bonds and are frequently ...
www.tcichemicals.com/eshop/en/us/category_index/03909/
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Olefination Reactions - uni-heidelberg.de
Olefination Reactions. - Wittig Reaction (Phosphorous ylides). - Horner- Wadsworth-Emmons Reaction (Phosphonates). - McMurry Coupling (Titanium ...
www.uni-heidelberg.de/institute/fak12/OC/bunz/lectures/mecha/Olefination_Reactions.pdf
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CHE 322 Study Guide Wittig Reaction ______
To initiate the Wittig reaction an alkyl halide is allowed to react with a ... popularmethod is the Horner-Wadsworth-Emmons (HWE) reaction, which starts with ...
www.ic.sunysb.edu/Class/che322jl/studyguides/sg3.pdf
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"The Wittig Reaction". In: Modern Carbonyl Olefination
This so-called Wittig reaction has a number of advantages over other ... phosphonate anions, and the Horner–Wittig reaction of phosphine oxide anions. Each of ...
faculty.ksu.edu.sa/72464/Documents/The%20Wittig%20Reaction.pdf
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EXPERIMENT 3 HORNER-EMMONS-WITTIG ... - Sites@UCI
Mar 21, 2013 ... REACTION: Horner-Emmons-Witting Reaction ... In this experiment, a modified Wittig reaction will be carried out to synthesize an alkene ...
sites.uci.edu/chem51labs/files/2011/06/51LC-S13-Wittig.pdf
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Wittig horner reaction in science
Wittig-Horner Reaction - Organic Chemistry Portal
Wittig-Horner Reaction Horner-Wadsworth-Emmons Reaction. The reaction of aldehydes or ketones with stabilized phosphorus ylides (phosphonate ...
Mechanism of the Phospha‐Wittig–Horner Reaction
May 7, 2013 ... Mechanism of the Phospha-Wittig–Horner Reaction† ... COST action 0802 PhoSciNet, and Uppsala University (U3MEC molecular electronics ...
Horner–Wadsworth–Emmons reaction - Wikipedia, the free ...
In 1958, Leopold Horner published a modified Wittig reaction using ... used in the Wittig reaction, phosphonate-stabilized carbanions are more nucleophilic but ...
Mechanism of the Phospha-Wittig–Horner Reaction
May 7, 2013 ... Phosphaalkenes are prominent ligands in homogenous catalysis due to their π- acceptor capacity1 and are appealing building blocks in ...
Heterocycles from Intramolecular Wittig, Horner and Wadsworth ...
Oct 9, 2012 ... University of Huddersfield. Information ... Heterocycles from Intramolecular Wittig, Horner and Wadsworth-Emmons Reactions. Tools. - Tools. + ...
[PDF]Efficient Total Synthesis of Piceatannol via (E)-Selective Wittig ...
Wittig–Horner reaction is demonstrated with six steps in overall 40% yield ... Institute of Applied Chemistry, Hallym University, Chuncheon 200-702, Korea.
Mechanism of the Phospha-Wittig-Horner Reaction
Apr 24, 2013 ... Arkhypchuk, Anna (Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, ...
Revisiting the Phospha-Wittig-Horner Reaction
Mar 12, 2012 ... Revisiting the Phospha-Wittig - Horner Reaction. Department: Uppsala University , Disciplinary Domain of Science and Technology, Chemistry, ...
[PDF]Synthesis of Bis-styrylbenzene derivatives via Wittig-Horner reaction
Aug 3, 2010 ... Wittig-Horner reaction. Joseph K. Wray. University of Nevada, Las Vegas. Tae Soo Jo. University of Nevada, Las Vegas. Pradip K. Browmik.
Dipeptide vinyl sultams: synthesis via the Wittig-Horner reaction and ...
Dipeptide vinyl sultams: synthesis via the Wittig-Horner reaction and activity against ... CECF, Faculty of Pharmacy, University of Lisbon, Avenida das Forças ...
Books on the term Wittig horner reaction
Organic Mechanisms: Reactions, Stereochemistry and Synthesis
Reinhard Bruckner, Michael Harmata, 2010
The Wittig-Horner reaction performed in a single operation, as described, is flawed by the lack of stereocontrol. That's because the phosphorylated lithium alkoxide D is formed without diastereoselectivity. So the alkene E is also formed without ...
Microscale Organic Laboratory: with Multistep and Multiscale ...
Dana W. Mayo, Ronald M. Pike, David C. Forbes, 2010
298 CHAPTER 6 Microscale Organic Laboratory Experiments The Wittig reaction is very general. ... An important modification (often called the Horner–Wadsworth –Emmons reaction) of the Wittig reaction makes use of phosphonate esters, ...
Organic Electroluminescence
Zakya H. Kafafi, 2005
EtO- fl-OEt + OHC O 188 Scheme 5.60 Synthesis of PPV copolymers through the Wittig- Horner reaction. Reaction conditions: (A) t-BuOK, THF. of cis- and £rtms- isomers.188 The former can be transformed into the trans-isomer by heating in a  ...
Carotenoids, Volume 2: Synthesis
George Britton, Hanspeter Pfander, Synnove Liaaen-Jensen, 1996
"Carotenoids, Volume 2" is the first book to be devoted entirely to the chemical synthesis of carotenoids.
Interfacial Catalysis
Alexander G. Volkov, 2002
Unexpectedly, the exchange reaction did not follow simple second-order or pseudo-first-order kinetics. ... However, the closely related two-liquid phase Wittig -Horner and Horner-Emmons reactions are catalyzed by quaternary ammonium salts ...
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Blog posts on the term
Wittig horner reaction
Wittig-Horner Reaction
www.organic-chemistry.org/namedreactions/wittig-horner-reaction.shtm
Horner–Wadsworth–Emmons reaction - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Horner%E2%80%93Wadsworth%E2%80%93Emmons_reaction
Horner-Wadsworth-Emmons (HWE) Reaction | Chem-Station Int. Ed.
January 29, 2015 HOME Chemists Organic AnalyticalChem BioChem PhysicalChem SupraMolecularChem Interviews Molecules Papers OrganicChem Nanochem Inorganicchem Medchem ChemEngineering ChemicalBiology Material Reactions Blog Gallery SITEMAP.
www.chem-station.com/en/?p=1276
The Wittig-Horner reaction in heterogeneous media1 - x : Synthesis of ∝-deuterated functional olefins using potassium carbonate with deuterium oxide.
www.sciencedirect.com/science/article/pii/S0040403900801264
A Practical, efficient, and atom economic alternative to the Wittig and Horner–Wadsworth–Emmons reactions for the synthesis of (E)-α,β-unsaturated esters from aldehydes
www.sciencedirect.com/science/article/pii/S0040402005016765
Wittig- And Horner–Wadsworth–Emmons-olefination Reactions With Stabilised And Semi-stabilised Phosphoranes And Phosphonates Under Non-classical Conditions - Free Review Article | Science Reviews 2000 Ltd
www.sciencereviews2000.co.uk/blog_v2/view/wittig-and-hornerndashwadsworthndashemmons-olefination-reactions-with-stabilised-and-semi-stabilised-phosphoranes-and-phosphonates-under-non-classical-conditions-free-review-article-nbsp/847
Wittig-Horner reactions on styrene-divinylbenzene supports with benzaldehyde side-groups | Plesu Nicoleta - Academia.edu
By Plesu Nicoleta. A styrene-divinylbenzene copolymer functionalized with aldehyde was prepared under phase transfer catalyzed (PTC) conditions. A statistical method for the calculation of the degree of functionalization with aldehyde groups is
www.academia.edu/9004917/Wittig-Horner_reactions_on_styrene-divinylbenzene_supports_with_benzaldehyde_side-groups
Mechanism of the phospha-wittig-horner reaction
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www.linknovate.com/publication/mechanism-of-the-phospha-wittig-horner-reaction-636630/
British Library EThOS : Thesis Details - Sterochemical control in the Wittig-Horner reaction
Chemistry, general Chemistry
ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253029
Wittig reaction
 The Wittig reaction or Wittig olefination is a chemical reaction of an aldehyde or ketone with a triphenyl phosphonium ylide (often called a Wittig reagent) …
www.slideshare.net/kumarbodapati/wittig-reaction-32272558
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