'Aldol reaction' presentation slideshows

Organic Chemistry

Organic Chemistry. William H. Brown & Christopher S. Foote. Enolate Anions. Chapter 18. Chapter 19. Enolate Anions. Enolate anions are nucleophiles in S N 2 reactions and carbonyl addition reactions. The Aldol Reaction.

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Chapter 13 ? -Substitution and Condensations of Enols and Enolate

Chapter 13 ? -Substitution and Condensations of Enols and Enolate. Text 1: Chapter 22, p 1003-1056 Text 2: 11,13 ?. 13.1 Enols and enolate ions ??????????. Resonance-stabilized anion. Keto form ( ??? Stable). Enol form ( ???? unstable). ?????? Enolate ion. Resonance-stabilized cation.

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Chapter 19 Enolates and Enamines

Chapter 19 Enolates and Enamines. Formation of an Enolate Anion. Enolate anions are formed by treating an aldehyde, ketone, or ester, which has at least one a -hydrogen, with base, Most of the negative charge in an enolate anion is on oxygen. oxygen. Reactive carbon. Enolate Anions.

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CARBONYL CONDENSATION REACTIONS

CARBONYL CONDENSATION REACTIONS. CARBONYL CONDENSATION REACTIONS. Aldol Reaction Dehydration of Aldol Products Intramolecular Aldol Reaction Claisen Condensation Reaction Intramolecular Claisen Condensation Michael Reaction Stork Enamine Reaction Robinson Annulation Reaction.

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Chapter 17 Aldehydes and Ketones II. Aldol Reactions

Chapter 17 Aldehydes and Ketones II. Aldol Reactions. The Acidity of the a Hydrogens of Carbonyl Compounds: Enolate Anions Hydrogens on carbons a to carbonyls are unusually acidic The resulting anion is stabilized by resonance to the carbonyl.

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the aldol and Claisen condensations

Aldol and Claisen condensations. REACTION OF CARBON NUCLEOPHILES WITH CARBONYL GROUPS. some of the most useful synthetic methods for carbon-carbon bond formation. Robinson annulation. Wittig and related olefination reactions. REACTIONS OF CARBON NUCLEOPHILES WITH CARBONYL GROUPS.

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Asymmetric Catalytic Aldol

Asymmetric Catalytic Aldol. Special Topic 27/04/2007 Hazel Turner. Contents. The Aldol Reaction The Directed Aldol Chiral Auxiliaries Examples Mukaiyama Aldol Acceptor activation Titanium Zirconium Copper Boron Donor Activation Rhodium, Palladium, Phosporamides

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Nucleophilic reactions involving enolate anions

Nucleophilic reactions involving enolate anions. Aldehydes, Ketons and other carbonyl compounds having H on ? -C -> in equilibrium (in solution) -> Keto-Enol tautomerization. Nucleophilic reactions involving enolate anions. Nucleophilic reactions involving enolate anions.

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Reactions at the ? -Carbon of Carbonyl Compounds Paula Yurkanis Bruice University of California,

Chapter 13. Reactions at the ? -Carbon of Carbonyl Compounds Paula Yurkanis Bruice University of California, Santa Barbara. Contents of Chapter 13. Acidity of Alpha Hydrogens Keto-enol Tautomers Alkylation of Enolate Ions Aldol Condensation

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Name Reactions B.Sc.II P-V By N. M.Gosavi

Name Reactions B.Sc.II P-V By N. M.Gosavi. . Synthesis and Reactions of ?- Dicarbonyl compounds. Introduction Compounds having two carbonyl groups separated by an intervening carbon are called ?-dicarbonyl compunds, and these compounds are highly versatile reagents for organic synthesis.

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Chapter 13 Substitution Alpha to Carbonyl Groups

Chapter 13 Substitution Alpha to Carbonyl Groups. Formation and Reactions of Enolate Anions and Enols Alkylation of Ketones and Esters: S N 2 Reaction with Alkyl Halides Aldol Reaction, Aldol Condensation and Related Reactions: Nucleophilic Addition of Enolate Anions to Carbonyl Groups

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Synthesis and characterization of 2,4-dihydroxy substituted chalcones using aldol condensation by SOCl2/ EtOH

A novel method for the synthesis of 2,4-dihydroxy substituted chalcones via aldol condensessions is introduced. In the presence of SOCl2/EtOH as a catalyst, Various substituted chalcones are synthesized by aldol condensation. The HCl is generated in situ by the reaction of SOCl2 with absolute ethanol. The structures of the synthesized ompounds were confirmed by IR, mass spectroscopy and elemental analysis.

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