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Knoevenagel condensation, the Glossary

In organic chemistry, the Knoevenagel condensation reaction is a type of chemical reaction named after German chemist Emil Knoevenagel.^[1]

56 relations: Acetonedicarboxylic acid, Acrolein, Alcohol (chemistry), Aldehyde, Aldol condensation, Amine, Arkivoc, Artemether/lumefantrine, Base (chemistry), Carbanion, Carbon dioxide, Carbonyl group, Carboxylic acid, Catalysis, Charge-transfer complex, Chemical equilibrium, Chemical reaction, Chemische Berichte, Cis–trans isomerism, Condensation reaction, Conjugated system, CS gas, Cyanoacetic acid, Cyclohexanone, Decarboxylation, Dehydration reaction, Diethyl malonate, Electron-withdrawing group, Emil Knoevenagel, Enol, Ethanol, Ethyl acetoacetate, Feist–Benary synthesis, Gewald reaction, Hantzsch pyridine synthesis, Iminocoumarin, Α,β-Unsaturated carbonyl compound, Ketone, Malonic acid, Malonic ester synthesis, Malononitrile, Meldrum's acid, Microwave chemistry, Molbank, Multi-component reaction, Nitroalkene, Nitromethane, Nucleophilic addition, Organic chemistry, Organic Reactions, ... Expand index (6 more) »
Condensation reactions

Acetonedicarboxylic acid

Acetonedicarboxylic acid, 3-oxoglutaric acid or β-ketoglutaric acid is a simple dicarboxylic acid.

See Knoevenagel condensation and Acetonedicarboxylic acid

Acrolein

Acrolein (systematic name: propenal) is the simplest unsaturated aldehyde.

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Alcohol (chemistry)

In chemistry, an alcohol is a type of organic compound that carries at least one hydroxyl functional group bound to carbon.

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Aldehyde

In organic chemistry, an aldehyde is an organic compound containing a functional group with the structure.

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An aldol condensation is a condensation reaction in organic chemistry in which two carbonyl moieties (of aldehydes or ketones) react to form a β-hydroxyaldehyde or β-hydroxyketone (an aldol reaction), and this is then followed by dehydration to give a conjugated enone. Knoevenagel condensation and aldol condensation are condensation reactions.

See Knoevenagel condensation and Aldol condensation

Amine

In chemistry, amines are compounds and functional groups that contain a basic nitrogen atom with a lone pair.

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Arkivoc

Arkivoc (Archive for Organic Chemistry) is a peer-reviewed open access scientific journal covering all aspects of organic chemistry.

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Artemether/lumefantrine

Artemether/lumefantrine, sold under the trade name Coartem among others, is a combination of the two medications artemether and lumefantrine.

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Base (chemistry)

In chemistry, there are three definitions in common use of the word "base": Arrhenius bases, Brønsted bases, and Lewis bases.

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Carbanion

In organic chemistry, a carbanion is an anion in which carbon is negatively charged.

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Carbon dioxide

Carbon dioxide is a chemical compound with the chemical formula.

See Knoevenagel condensation and Carbon dioxide

Carbonyl group

For organic chemistry, a carbonyl group is a functional group with the formula, composed of a carbon atom double-bonded to an oxygen atom, and it is divalent at the C atom.

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Carboxylic acid

In organic chemistry, a carboxylic acid is an organic acid that contains a carboxyl group attached to an R-group.

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Catalysis

Catalysis is the increase in rate of a chemical reaction due to an added substance known as a catalyst.

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Charge-transfer complex

In chemistry, charge-transfer (CT) complex, or electron donor-acceptor complex, describes a type of supramolecular assembly of two or more molecules or ions.

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Chemical equilibrium

In a chemical reaction, chemical equilibrium is the state in which both the reactants and products are present in concentrations which have no further tendency to change with time, so that there is no observable change in the properties of the system.

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Chemical reaction

A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another.

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Chemische Berichte

Chemische Berichte (usually abbreviated as Ber. or Chem. Ber.) was a German-language scientific journal of all disciplines of chemistry founded in 1868.

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Cis–trans isomerism

Cis–trans isomerism, also known as geometric isomerism, describes certain arrangements of atoms within molecules.

See Knoevenagel condensation and Cis–trans isomerism

Condensation reaction

In organic chemistry, a condensation reaction is a type of chemical reaction in which two molecules are combined to form a single molecule, usually with the loss of a small molecule such as water. Knoevenagel condensation and condensation reaction are condensation reactions.

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Conjugated system

In theoretical chemistry, a conjugated system is a system of connected p-orbitals with delocalized electrons in a molecule, which in general lowers the overall energy of the molecule and increases stability.

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CS gas

The compound 2-chlorobenzalmalononitrile (also called o-chlorobenzylidene malononitrile; chemical formula: C10H5ClN2), a cyanocarbon, is the defining component of the lachrymatory agent commonly referred to as CS gas, a tear gas which is used as a riot control agent.

See Knoevenagel condensation and CS gas

Cyanoacetic acid

Cyanoacetic acid is an organic compound.

See Knoevenagel condensation and Cyanoacetic acid

Cyclohexanone

Cyclohexanone is the organic compound with the formula (CH2)5CO.

See Knoevenagel condensation and Cyclohexanone

Decarboxylation

Decarboxylation is a chemical reaction that removes a carboxyl group and releases carbon dioxide (CO2).

See Knoevenagel condensation and Decarboxylation

Dehydration reaction

In chemistry, a dehydration reaction is a chemical reaction that involves the loss of water from the reacting molecule or ion.

See Knoevenagel condensation and Dehydration reaction

Diethyl malonate

Diethyl malonate, also known as DEM, is the diethyl ester of malonic acid.

See Knoevenagel condensation and Diethyl malonate

Electron-withdrawing group

An electron-withdrawing group (EWG) is a group or atom that has the ability to draw electron density toward itself and away from other adjacent atoms.

See Knoevenagel condensation and Electron-withdrawing group

Emil Knoevenagel

Heinrich Emil Albert Knoevenagel (18 June 1865 – 11 August 1921) was the German chemist who established the Knoevenagel condensation reaction.

See Knoevenagel condensation and Emil Knoevenagel

Enol

In organic chemistry, alkenols (shortened to enols) are a type of reactive structure or intermediate in organic chemistry that is represented as an alkene (olefin) with a hydroxyl group attached to one end of the alkene double bond.

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Ethanol

Ethanol (also called ethyl alcohol, grain alcohol, drinking alcohol, or simply alcohol) is an organic compound with the chemical formula.

See Knoevenagel condensation and Ethanol

Ethyl acetoacetate

The organic compound ethyl acetoacetate (EAA) is the ethyl ester of acetoacetic acid.

See Knoevenagel condensation and Ethyl acetoacetate

Feist–Benary synthesis

The Feist–Benary synthesis is an organic reaction between α-halo ketones and β-dicarbonyl compounds to produce substituted furan compounds. Knoevenagel condensation and Feist–Benary synthesis are name reactions.

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Gewald reaction

The Gewald reaction is an organic reaction involving the condensation of a ketone (or aldehyde when R2. Knoevenagel condensation and Gewald reaction are name reactions.

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Hantzsch pyridine synthesis

The Hantzsch pyridine synthesis or Hantzsch dihydropyridine synthesis is a multi-component organic reaction between an aldehyde such as formaldehyde, 2 equivalents of a β-keto ester such as ethyl acetoacetate and a nitrogen donor such as ammonium acetate or ammonia. Knoevenagel condensation and Hantzsch pyridine synthesis are name reactions.

See Knoevenagel condensation and Hantzsch pyridine synthesis

Iminocoumarin

Iminocoumarins are a group of chemicals consisting of a coumarin with an attached imine group.

See Knoevenagel condensation and Iminocoumarin

Α,β-Unsaturated carbonyl compound

α,β-Unsaturated carbonyl compounds are organic compounds with the general structure (O.

See Knoevenagel condensation and Α,β-Unsaturated carbonyl compound

Ketone

In organic chemistry, a ketone is an organic compound with the structure, where R and R' can be a variety of carbon-containing substituents.

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Malonic acid

Malonic acid (IUPAC systematic name: propanedioic acid) is a dicarboxylic acid with structure CH2(COOH)2.

See Knoevenagel condensation and Malonic acid

Malonic ester synthesis

The malonic ester synthesis is a chemical reaction where diethyl malonate or another ester of malonic acid is alkylated at the carbon alpha (directly adjacent) to both carbonyl groups, and then converted to a substituted acetic acid. Knoevenagel condensation and malonic ester synthesis are Coupling reactions.

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Malononitrile

Malononitrile is an organic compound nitrile with the formula.

See Knoevenagel condensation and Malononitrile

Meldrum's acid

Meldrum's acid or 2,2-dimethyl-1,3-dioxane-4,6-dione is an organic compound with formula.

See Knoevenagel condensation and Meldrum's acid

Microwave chemistry

Microwave chemistry is the science of applying microwave radiation to chemical reactions.

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Molbank

Molbank is a peer-reviewed, open access, scientific journal covering synthetic chemistry and natural product chemistry, established in 1997 as a section of Molecules and is published by MDPI.

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Multi-component reaction

A multi-component reaction (or MCR), sometimes referred to as a "Multi-component Assembly Process" (or MCAP), is a chemical reaction where three or more compounds react to form a single product.

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Nitroalkene

A nitroalkene, or nitro olefin, is a functional group combining the functionality of its constituent parts, an alkene and nitro group, while displaying its own chemical properties through alkene activation, making the functional group useful in specialty reactions such as the Michael reaction or Diels-Alder additions.

See Knoevenagel condensation and Nitroalkene

Nitromethane

Nitromethane, sometimes shortened to simply "nitro", is an organic compound with the chemical formula.

See Knoevenagel condensation and Nitromethane

Nucleophilic addition

In organic chemistry, a nucleophilic addition (AN) reaction is an addition reaction where a chemical compound with an electrophilic double or triple bond reacts with a nucleophile, such that the double or triple bond is broken.

See Knoevenagel condensation and Nucleophilic addition

Organic chemistry

Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, and reactions of organic compounds and organic materials, i.e., matter in its various forms that contain carbon atoms.

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Organic Reactions

Organic Reactions is a peer-reviewed book series that was established in 1942.

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Piperidine

Piperidine is an organic compound with the molecular formula (CH2)5NH.

See Knoevenagel condensation and Piperidine

Pyridine

Pyridine is a basic heterocyclic organic compound with the chemical formula.

See Knoevenagel condensation and Pyridine

Self-condensation

In organic chemistry, self-condensation is an organic reaction in which a chemical compound containing a carbonyl group acts both as the electrophile and the nucleophile in an aldol condensation. Knoevenagel condensation and self-condensation are condensation reactions.

See Knoevenagel condensation and Self-condensation

References

[1] https://en.wikipedia.org/wiki/Knoevenagel_condensation

Also known as Doebner modification, Doebner synthesis, Knaevenagel reaction.

, Piperidine, Pyridine, Self-condensation, Thiobarbituric acid, 2-Methoxybenzaldehyde, 3-Amino-1,2,4-triazole.

Knoevenagel condensation, the Glossary

Table of Contents

See also

Condensation reactions

References