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Organic Reactions

Last updated

Jan 23, 2023
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- Yamaguchi Esterification
- Aldol Condensation

Organic Reactions Wiki

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http://organicreactions.org/index.ph...tions_chapters

http://www.organicreactions.org/inde...ed_or_Abridged

Aldol Condensation
An aldol condensation is a condensation reaction in organic chemistry in which an enol or an enolate ion reacts with a carbonyl compound to form a β-hydroxyaldehyde or β-hydroxyketone, followed by dehydration to give a conjugated enone.
Cannizzaro Reaction
The Cannizzaro reaction, named after its discoverer Stanislao Cannizzaro, is a chemical reaction that involves the base-induced disproportionation of an aldehyde lacking a hydrogen atom in the alpha position.
Claisen Condensation
The Claisen condensation is a carbon–carbon bond forming reaction that occurs between two esters or one ester and another carbonyl compound in the presence of a strong base, resulting in a β-keto ester or a β-diketone.
Claisen Rearrangement
The Claisen rearrangement is a carbon–carbon bond-forming chemical reaction discovered by Rainer Ludwig Claisen. The heating of an allyl vinyl ether will initiate a [3,3]-sigmatropic rearrangement to give a γ,δ-unsaturated carbonyl.
Clemmensen Reduction
Clemmensen reduction is a chemical reaction described as a reduction of carbonyls to alkanes using zinc amalgam and hydrochloric acid.
Dieckmann Condensation
The Dieckmann condensation is the intramolecular chemical reaction of diesters with base to give β-ketoesters. It is named after the German chemist Walter Dieckmann (1869–1925). The equivalent intermolecular reaction is the Claisen condensation.
Formation of Cyclic Ketones by Intramolecular Acylation
In chemistry, acylation (rarely, but more formally: alkanoylation) is the process of adding an acyl group to a compound. The compound providing the acyl group is called the acylating agent.
Hydroamination Reactions of Alkenes
Hydroamination reactions of alkenes represent additions of N-H bonds across carbon-carbon double bonds. Viable substrates for these reactions include unactivated alkenes, vinyl arenes, allenes, and strained alkenes. The scope of the nitrogen-containing reactant includes amines, azoles, and N-protected substrates. A variety of catalysts have been employed including alkali metals, alkaline earth metals, transition metals, and lanthanides.
Jacobsen Rearrangement
The Jacobsen rearrangement is a chemical reaction, commonly described as the migration of an alkyl group in a sulfonic acid derived from a polyalkyl- or polyhalobenzene
Mannich Reaction
The Mannich reaction is an organic reaction which consists of an amino alkylation of an acidic proton placed next to a carbonyl functional group by formaldehyde and a primary or secondary amine or ammonia. The final product is a β-amino-carbonyl compound also known as a Mannich base.
Periodic Acid Oxidation
Oxidation with Periodic Acid is used to cleave vicinal diols (a total of two alcohols, one on two adjacent carbons) into two carbonyl molecules.
Preparation of Aliphatic Fluorine Compounds
Preparation of Unsymmetrical Biaryls by the Diazo Reaction and the Nitrosoacetylamine Reaction
Preparation of Unsymmetrical Biaryls by the Diazo Reaction and the Nitrosoacetylamine reaction is an aryl-aryl coupling reaction via a diazonium salt. It is also known as the Gomberg–Bachmann reaction.
Reduction with Aluminum Alkoxides (The Meerwein-Ponndorf-Verley Reduction)
Meerwein–Ponndorf–Verley (MPV) reduction in organic chemistry is the reduction of ketones and aldehydes to their corresponding alcohols utilizing aluminium alkoxidecatalysis in the presence of a sacrificial alcohol. The beauty of the MPV reduction lies in its high chemoselectivity, and its use of a cheap environmentally friendly metal catalyst.
Replacement of the Aromatic Primary Amino Group by Hydrogen
The Sandmeyer reaction is a chemical reaction used to synthesize aryl halides from aryl diazonium salts. The reaction is a method for substitution of an aromatic amino group via preparation of its diazonium salt followed by its displacement with a nucleophile. The nucleophile in this case is hypophosphorus acid, H3PO2 .
Schmidt Reaction
The Schmidt reaction is the reaction of hydrazoic acid or an alkyl azide with a carbonyl compound, alkene, or alcohol, often in the presence of a Brønsted or Lewis acid. Although the family of Schmidt reactions includes a number of variants, they all result in the migration of a substituent from carbon to nitrogen with loss of a molecule of dinitrogen. This reaction has considerable utility for the synthesis of hindered or cyclic amides and amines.
Wacker Oxidation
The Wacker oxidation refers generally to the transformation of a terminal or 1,2-disubstituted alkene to a ketone through the action of catalytic palladium(II), water, and a co-oxidant.
Wittig Reaction
The Wittig reaction is a chemical reaction of an aldehyde or ketone with a triphenyl phosphonium ylide (often called a Wittig reagent) to give an alkene and triphenylphosphine oxide.

Thumbnail: a reaction map for ketones (not comprehensive). From Mastering Chemistry (http://www.masterorganicchemistry.com)

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This page is based on Organic Reactions. The primary collection of full Organic Reactions chapters is maintained by John Wiley & Sons.

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