FACTOID # 9: North Korea spends most of its GDP on its military.
 
 Home   Encyclopedia   Statistics   Countries A-Z   Flags   Maps   Education   Forum   FAQ   About 
 
WHAT'S NEW
RELATED ARTICLES
People who viewed "Ester" also viewed:
RECENT ARTICLES
More Recent Articles »
 

SEARCH ALL

FACTS & STATISTICS   

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Ester

A carboxylic acid ester. R and R' denote any alkyl or aryl group
A carboxylic acid ester. R and R' denote any alkyl or aryl group
A phosphoric acid ester
A phosphoric acid ester

Esters are a class of chemical compounds and functional groups. Esters consist of an inorganic or organic acid in which at least one -OH (hydroxy) group is replaced by an -O-alkyl (alkoxy) group. The most common type of esters are carboxylic acid esters (R1-C(=O)-O-R2), other esters include phosphoric acid, sulfuric acid, nitric acid, and boric acid esters. Volatile esters often have a smell and are found in perfumes, essential oils, and pheromones and give many fruits their scent. Ethyl acetate and methyl acetate are important solvents, fatty acid esters form fat and lipids, and polyesters are important plastics. Cyclic esters are called lactones. The name "ester" is derived from the German Essig-Äther (literally:vinegar ether), an old name for ethyl acetate. Esters can be synthesized in a condensation reaction between an acid and an alcohol in a reaction known as esterification. The term ester may have a few meanings: Ester, a functional group in organic chemistry Ester, Alaska, a town The name Ester Esther (disambiguation) Hadassah (disambiguation) Category: ... Image File history File links Download high resolution version (969x744, 12 KB) Summary Description: Structural formula of a general ester group ((RCOOR). Author, date of creation: self made by Ben Mills at 17:58, 8 March 2006 (UTC). ... Image File history File links Download high resolution version (969x744, 12 KB) Summary Description: Structural formula of a general ester group ((RCOOR). Author, date of creation: self made by Ben Mills at 17:58, 8 March 2006 (UTC). ... An alkyl is a univalent radical containing only carbon and hydrogen atoms arranged in a chain. ... In the context of organic molecules, aryl refers to any member of the set of functional groups or substituents that are derived from a simple aromatic ring. ... Image File history File links Phosphate_Group. ... Image File history File links Phosphate_Group. ... A chemical compound is a chemical substance formed from two or more elements, with a fixed ratio determining the composition. ... In organic chemistry, functional groups (or moieties) are specific groups of atoms within molecules, that are responsible for the characteristic chemical reactions of those molecules. ... Inorganic chemistry is the branch of chemistry concerned with the properties and reactions of inorganic compounds. ... Organic chemistry is a specific discipline within chemistry which involves the scientific study of the structure, properties, composition, reactions, and preparation (by synthesis or by other means) of chemical compounds consisting primarily of carbon and hydrogen, which may contain any number of other elements, including nitrogen, oxygen, halogens as well... For other uses, see Acid (disambiguation). ... This prefix in chemical nomenclature indicates the presence of a hydroxyl functional group (-OH). ... An alkyl is a univalent radical containing only carbon and hydrogen atoms arranged in a chain. ... In chemistry, the alkoxyl group is an alkyl group linked to oxygen thus: R-O- In this function, R represents the alkyl group. ... Structure of a carboxylic acid The 3D structure of the carboxyl group A space-filling model of the carboxyl group Carboxylic acids are organic acids characterized by the presence of a carboxyl group, which has the formula -C(=O)OH, usually written -COOH or -CO2H. [1] Carboxylic acids are Bronsted... This article is about orthophosphoric acid. ... R-phrases S-phrases , , , Flash point Non-flammable Related Compounds Related strong acids Selenic acid Hydrochloric acid Nitric acid Related compounds Hydrogen sulfide Sulfurous acid Peroxymonosulfuric acid Sulfur trioxide Oleum Supplementary data page Structure and properties n, εr, etc. ... The chemical compound nitric acid (HNO3), also known as aqua fortis and spirit of nitre, is an aqueous solution of hydrogen nitrate (anhydrous nitric acid). ... Flash point Non-flammable. ... An Odorant is an substance that can be smelled. ... Perfume is a mixture of fragrant essential oils and aroma compounds, fixatives, and solvents used to give the human body, objects, and living spaces a pleasant smell. ... An essential oil is a concentrated, hydrophobic liquid containing volatile aromatic compounds from plants. ... Fanning honeybee exposes Nasonov gland (white-at tip of abdomen) releasing pheromone to entice swarm into an empty hive A pheromone is a chemical that triggers an innate behavioural response in another member of the same species. ... Popular Japanese fashion magazine throughout the 1990s; the photography of which has recently been reissued in two collections from Phaidon press. ... R-phrases , , , S-phrases , , Flash point −4 °C Related Compounds Related carboxylate esters Methyl acetate, Butyl acetate Related compounds Acetic acid, ethanol Supplementary data page Structure and properties n, εr, etc. ... Methyl acetate, also known as acetic acid methyl ester or methyl ethanoate, is a clear, flammable liquid with a characteristic, not unpleasant smell like certain glues or nail polish removers. ... For other uses, see Solvent (disambiguation). ... In chemistry, especially biochemistry, a fatty acid is a carboxylic acid often with a long unbranched aliphatic tail (chain), which is either saturated or unsaturated. ... For other uses, see FAT. Fats consist of a wide group of compounds that are generally soluble in organic solvents and largely insoluble in water. ... Some common lipids. ... SEM picture of a bend in a high surface area polyester fiber with a seven-lobed cross section Polyester is a category of polymers, or, more specifically condensation polymers, which contain the ester functional group in their main chain. ... For other uses, see Plastic (disambiguation). ... A lactone is a cyclic ester in organic chemistry. ... This article is about a general class of chemical compounds. ... In chemistry, chemical synthesis is purposeful execution of chemical reactions in order to get a product, or several products. ... A condensation reaction is a chemical reaction in which two molecules or moieties combine to form one single molecule, together with the loss of a small molecule. ... This article does not cite any references or sources. ... Esterification is the general name for a chemical reaction in which two chemicals (typically an alcohol and an acid) form an ester as the reaction product. ...

Contents

Nomenclature

An ester is named according to the two parts that make it up: the part from the alcohol and the part from the acid (in that order), for example ethyl sulfuric acid ester.


Since most esters are derived from carboxylic acids, a specific nomenclature is used for them. For esters derived from the simplest carboxylic acids, the traditional name for the acid constituent is generally retained, e.g. formate, acetate, propionate, butyrate.[1] For esters from more complex carboxylic acids, the systematic name for the acid is used, followed by the suffix -oate. For example, methyl formate is the ester of methanol and methanoic acid (formic acid): the simplest ester. It could also be called methyl methanoate.[2] Methyl formate, also called methyl methanoate, is the methyl ester of formic acid. ...


Image:Ethylethanoate.png Image File history File links Ethylethanoate. ...


Esters of aromatic acids are also encountered, including benzoates such as methyl benzoate, and phthalates, with substitution allowed in the name. In chemistry, an aromatic molecule is one in which electrons are free to cycle around circular arrangements of atoms, which are alternately singly and doubly bonded to one another. ... The benzoate ion is C6H5COO− (benzoic acid minus one hydrogen ion). ... Methyl benzoate is an ester with the chemical formula C6H5COOCH3. ... General chemical structure of phthalates. ...


Physical properties

Esters participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding makes them more water-soluble than their parent hydrocarbons. However, the limitations on their hydrogen bonding also make them more hydrophobic than either their parent alcohols or parent acids. Their lack of hydrogen-bond-donating ability means that ester molecules cannot hydrogen-bond to each other, which makes esters generally more volatile than a carboxylic acid of similar molecular weight. This property makes them very useful in organic analytical chemistry: unknown organic acids with low volatility can often be esterified into a volatile ester, which can then be analyzed using gas chromatography, gas liquid chromatography, or mass spectrometry. Many esters have distinctive odors, which has led to their use as artificial flavorings and fragrances. For example: An example of a quadruple hydrogen bond between a self-assembled dimer complex reported by Meijer and coworkers. ... Impact from a water drop causes an upward rebound jet surrounded by circular capillary waves. ... It has been suggested that this article or section be merged with Solution. ... Oil refineries are key to obtaining hydrocarbons; crude oil is processed through several stages to form desirable hydrocarbons, used in fuel and other commercial products. ... 3D (left and center) and 2D (right) representations of the terpenoid molecule atisane. ... Structure of a carboxylic acid The 3D structure of the carboxyl group A space-filling model of the carboxyl group Carboxylic acids are organic acids characterized by the presence of a carboxyl group, which has the formula -C(=O)OH, usually written -COOH or -CO2H. [1] Carboxylic acids are Bronsted... Gas-liquid chromatography (GLC), or simply gas chromatography (GC) is a type of chromatography in which the mobile phase is a carrier gas, usually an inert gas such as helium or nitrogen, and the stationary phase is a microscopic layer of liquid on an inert solid support. ... ... Mass spectrometry (previously called mass spectroscopy (deprecated)[1] or informally, mass-spec and MS) is an analytical technique used to measure the mass-to-charge ratio of ions. ...

Ester Name Molar Mass
(g/mol)
Structure Odor or Occurrence
Allyl hexanoate 156.22 pineapple
Benzyl acetate 150.18 1 1 0 pear, strawberry, jasmine
Bornyl acetate 196.29 pine tree flavor
Butyl butyrate 144.21 2 2 0 pineapple
Ethyl acetate 88.12 1 3 0 nail polish remover, model paint, model airplane glue
Ethyl butyrate 116.16 1 2 0 banana, pineapple, strawberry
Ethyl hexanoate 144.21 strawberry
Ethyl cinnamate 176.21 cinnamon
Ethyl formate 74.08 lemon, rum, strawberry
Ethyl heptanoate 158.27 apricot, cherry, grape, raspberry
Ethyl isovalerate 130.18 apple
Ethyl lactate 118.13 1 1 0 butter, cream
Ethyl nonanoate 186.29 grape
Ethyl pentanoate 130.18 1 3 0 apple
Geranyl acetate 196.29 0 1 0 geranium
Geranyl butyrate 224.34 cherry
Geranyl pentanoate 238.37 apple
Isobutyl acetate 116.16 1 3 0 cherry, raspberry, strawberry
Isobutyl formate 102.13 raspberries
Isoamyl acetate 130.19 pear, banana (flavoring in Pear Drops)
Isopropyl acetate 102.1 1 3 0 fruity
Linalyl acetate 196.29 lavender, sage
Linalyl butyrate 224.34 peach
Linalyl formate 182.26 apple, peach
Methyl acetate 74.08 1 3 0 peppermint
Methyl anthranilate 151.165 grape, jasmine
Methyl benzoate 136.15 0 2 0 fruity, ylang ylang, feijoa
Methyl benzyl acetate 164.20 cherry
Methyl butyrate 102.13 1 3 0 pineapple, apple
Methyl cinnamate 162.185 strawberry
Methyl pentanoate 116.16 flowery
Methyl phenyl acetate 150.17 honey
Methyl salicylate (oil of wintergreen) 152.1494 root beer, wintergreen, Germolene™ and Ralgex™ ointments (UK)
Nonyl caprylate orange
Octyl acetate 172.27 fruity-orange
Octyl butyrate 200.32 parsnip
Amyl acetate (pentyl acetate) 130.19 apple, banana
Pentyl butyrate (amyl butyrate) 158.24 apricot, pear, pineapple
Pentyl hexanoate (amyl caproate) 186.29 apple, pineapple
Pentyl pentanoate (amyl valerate) 172.15 apple
Propyl ethanoate 102.13 pear
Propyl isobutyrate 130.18 rum
Terpenyl butyrate cherry

Molar mass is the mass of one mole of a chemical element or chemical compound. ... NFPA 704 is a standard maintained by the U.S. National Fire Protection Association. ... NFPA 704 is a standard maintained by the U.S. National Fire Protection Association. ... NFPA 704 is a standard maintained by the U.S. National Fire Protection Association. ... For other uses, see Pineapple (disambiguation). ... Benzyl acetate Benzyl acetate is an organic compound with the molecular formula C9H10O2. ... Image File history File links No higher resolution available. ... This article does not cite any references or sources. ... For other uses, see Strawberry (disambiguation). ... This article is about the shrub of genus Jasminum. ... Image File history File links This is a lossless scalable vector image. ... For other uses, see Pine (disambiguation). ... R-phrases , Flash point 49 °C Except where noted otherwise, data are given for materials in their standard state (at 25 Â°C, 100 kPa) Infobox disclaimer and references Butyl butyrate, or butyl butanoate, is an organic compound which is an ester formed by the condensation of butyric acid and butanol. ... Image File history File links No higher resolution available. ... For other uses, see Pineapple (disambiguation). ... R-phrases , , , S-phrases , , Flash point −4 °C Related Compounds Related carboxylate esters Methyl acetate, Butyl acetate Related compounds Acetic acid, ethanol Supplementary data page Structure and properties n, εr, etc. ... Chemical structure of Ethyl acetate Selfmade by cacycle File links The following pages link to this file: Ethyl acetate Categories: GFDL images ... In chemistry, acetone (also known as propanone, dimethyl ketone, 2-propanone, propan-2-one and β-ketopropane) is the simplest representative of the ketones. ... A scale model of the Tower of London. ... This article does not cite any references or sources. ... A Die Cast Boeing 747-800 static model. ... For the band, see Adhesive (band). ... Chemical structure of ethyl butyrate Ethyl butyrate, also known as ethyl butanoate is an ester with the chemical formula CH3CH2CH2COO-CH2CH3, with one oxygen having a double bond. ... Image File history File links Download high resolution version (1673x698, 4 KB) Summary Chemical structure of ethyl butyrate. ... This article or section does not cite its references or sources. ... For other uses, see Pineapple (disambiguation). ... For other uses, see Strawberry (disambiguation). ... Image File history File links No higher resolution available. ... For other uses, see Strawberry (disambiguation). ... Ethyl cinnamate is the ester of cinnamic acid and ethanol. ... Image File history File links Ethyl_cinnamate. ... Binomial name J.Presl Cassia (Chinese cinnamon) is also commonly called (and sometimes sold as) cinnamon. ... Ethyl formate, also known as ethyl methanoate is an ester formed when ethanol reacts with formic acid. ... Image File history File links Size of this preview: 800 × 263 pixelsFull resolution (1282 × 422 pixel, file size: 9 KB, MIME type: image/png) Description: Chemical structure of Ethyl methanoate. ... This article is about the fruit. ... This article is about the beverage. ... For other uses, see Strawberry (disambiguation). ... Ethyl heptanoate is the ester resulting from the condensation of heptanoic acid and ethanol. ... Image File history File links Ethyl_heptanoate. ... Binomial name Prunus armeniaca L. For other uses, see Apricot (disambiguation). ... For other uses, see Cherry (disambiguation). ... This article is about the fruits of the genus Vitis. ... Cultivated raspberries The raspberry (plural, raspberries) is the edible fruit of a number of species of the genus Rubus. ... Image File history File links No higher resolution available. ... This article is about the fruit. ... Ethyl lactate also known as Lactic acid ethyl ester, 2-Hydroxypropanoic acid, ethyl ester, Actylol, or Acytol is a monobasic ester commonly used as a solvent. ... Image File history File links No higher resolution available. ... For other uses, see Butter (disambiguation). ... Cans of cream. ... Image File history File links No higher resolution available. ... This article is about the fruits of the genus Vitis. ... Ethyl pentanoate, also commonly known as ethyl valerate, is an organic compound used in flavors. ... Image File history File links No higher resolution available. ... This article is about the fruit. ... Geranyl acetate is a natural organic compound that is classified as a monoterpene. ... Image File history File links No higher resolution available. ... Not to be confused with germanium. ... For other uses, see Cherry (disambiguation). ... This article is about the fruit. ... Flash point 18 °C R/S statement R: S: , , , RTECS number  ? Supplementary data page Structure and properties n, εr, etc. ... Image File history File links No higher resolution available. ... For other uses, see Cherry (disambiguation). ... Cultivated raspberries The raspberry (plural, raspberries) is the edible fruit of a number of species of the genus Rubus. ... For other uses, see Strawberry (disambiguation). ... Image File history File links No higher resolution available. ... Raspberries has multiple meanings: For the tart fruit of the plant Rubus idaeus, see Raspberry. ... Isoamyl acetate is an organic compound that is the ester formed from isoamyl alcohol and acetic acid. ... Image File history File links Isoamyl_acetate. ... This article does not cite any references or sources. ... This article or section does not cite its references or sources. ... Disclaimer and references Isopropyl acetate is an organic compound which is the product of condensation of acetic acid and isopropanol. ... Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... Species About 25-30, including: Lavandula abrotanoides Lavandula angustifolia Lavandula canariensis Lavandula dentata Lavandula lanata Lavandula latifolia Lavandula multifida Lavandula pinnata Lavandula stoechas Lavandula viridis Lavandula x intermedia The Lavenders Lavandula are a genus of about 25-30 species of flowering plants in the mint family, Lamiaceae, native from the... Binomial name L. Sage leaves - first variety Sage leaves - second variety Common sage (Salvia officinalis) is a small evergreen subshrub, with woody stems, grayish leaves, and blue to purplish flowers native to southern Europe and the Mediterranean region. ... Binomial name (L.) Batsch Percentages are relative to US recommendations for adults. ... This article is about the fruit. ... Binomial name (L.) Batsch Percentages are relative to US recommendations for adults. ... Methyl acetate, also known as acetic acid methyl ester or methyl ethanoate, is a clear, flammable liquid with a characteristic, not unpleasant smell like certain glues or nail polish removers. ... Chemical structure of Methyl acetate Selfmade by cacycle File links The following pages link to this file: Methyl acetate Categories: GFDL images ... Binomial name Mentha × piperita L. Peppermint (Mentha × piperita) is a (usually) sterile hybrid mint, a cross between watermint (Mentha aquatica) and spearmint (Mentha spicata). ... Methyl anthranilate, also known as MA, methyl 2-aminobenzoate or carbomethoxyaniline, is an ester of anthranilic acid. ... Image File history File links No higher resolution available. ... This article is about the fruits of the genus Vitis. ... This article is about the shrub of genus Jasminum. ... Methyl benzoate is an ester with the chemical formula C6H5COOCH3. ... Image File history File links Methyl_benzoate. ... Binomial name Cananga odorata (Lam. ... Binomial name Feijoa sellowiana O. Berg // Whole and cut feijoas. ... For other uses, see Cherry (disambiguation). ... Methyl butyrate is an ester with a fruity fragrance resembling apples or pineapples. ... Image File history File links No higher resolution available. ... For other uses, see Pineapple (disambiguation). ... This article is about the fruit. ... Methyl cinnamate is the methyl ester of cinnamic acid. ... For other uses, see Strawberry (disambiguation). ... Methyl pentanoate, or commonly methyl valerate, is an ester with a fruity fragrance. ... Image File history File links No higher resolution available. ... For other uses, see Flower (disambiguation). ... For other uses, see Honey (disambiguation). ... Methyl salicylate (chemical formula C6H4(HO)COOCH3; also known as salicylic acid methyl ester, oil of wintergreen, betula oil, methyl-2-hydroxybenzoate) is a natural product of many species of plants. ... Methyl salicylate (chemical formula C6H4(HO)COOCH3; also known as oil of wintergreen, betula oil, methyl ester) is a natural product of many species of plants. ... Image File history File links Download high resolution version (813x695, 3 KB) Description: Chemical structure of Methyl salicylate. ... A glass of root beer with foam Root beer is a beverage popularized in North America that comes in two forms: alcoholic and soft drink. ... Wintergreen is a term that can refer to various groups of plants: Wintergreen once commonly referred to plants that continue photosynthesis (remain green) throughout the winter. ... Germolene is an antiseptic liquid. ... Binomial name (L.) Osbeck Orange—specifically, sweet orange—refers to the citrus tree Citrus sinensis (syn. ... General information n-Octyl acetate is an ester that is formed from octanol (octyl alcohol) and acetic acid. ... Image File history File links No higher resolution available. ... Binomial name (L.) Osbeck Orange—specifically, sweet orange—refers to the citrus tree Citrus sinensis (syn. ... Butyric acid, (from Greek βουτυρος = butter) IUPAC name n-Butanoic acid, or normal butyric acid, is a carboxylic acid with structural formula CH3CH2CH2-COOH. It is notably found in rancid butter, parmesan cheese, and vomit, and has an unpleasant odor and acrid taste, with a sweetish aftertaste (similar to ether). ... Binomial name Pastinaca sativa L. The parsnip (Pastinaca sativa) is a root vegetable related to the carrot. ... Amyl acetate (also pentyl ethanoate, pentyl acetate) is an organic compound and an ester with the chemical formula CH3COO(CH2)4CH3 and the molecular weight 130. ... Image File history File links Amyl_acetate. ... This article is about the fruit. ... This article or section does not cite its references or sources. ... Pentyl butyrate, also known as Pentyl butanoate, is an ester that is formed when pentanol is reacted with butyric acid, usually in the presence of sulfuric acid as a catalyst. ... Image File history File links No higher resolution available. ... Binomial name Prunus armeniaca L. For other uses, see Apricot (disambiguation). ... This article does not cite any references or sources. ... For other uses, see Pineapple (disambiguation). ... This article is about the fruit. ... For other uses, see Pineapple (disambiguation). ... Pentyl pentanoate is an ester used in dilute quantities to replicate the scent or flavour of apple, and sometimes pineapple. ... Image File history File links No higher resolution available. ... This article is about the fruit. ... Image File history File links This is a lossless scalable vector image. ... This article does not cite any references or sources. ... Image File history File links This is a lossless scalable vector image. ... This article is about the beverage. ... For other uses, see Cherry (disambiguation). ...

Ester synthesis

"Esterification" (condensation of an alcohol and an acid) is not the only way to synthesize an ester. Esters can be prepared in the laboratory in a number of other ways:

In organic chemistry, transesterification is the process of exchanging the alkoxy group of an ester compound by another alcohol. ... The Dieckmann condensation is the chemical reaction of diesters with base to give β-ketoesters. ... 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. ... The Favorskii rearrangement is a chemical reaction that produces carboxylic acids (or esters) from α-haloketones via a base-catalyzed rearrangement. ... In chemistry, nucleophilic substitution is a class of substitution reaction in which an electron-rich nucleophile attacks a molecule and replaces a group or atom, called the leaving group. ... In chemistry, an alkyl halide is an organic molecule of the form R_X, where X is a halide and R contains a carbon atom bonded to other functional groups or hydrogens. ... The Baeyer-Villiger oxidation is an organic reaction in which a ketone is oxidized to an ester by treatment with peroxy acids or hydrogen peroxide. ... The Pinner reaction is an organic reaction of a nitrile with an alcohol under acid catalysis for instance hydrochloric acid. ... A nitrile is any organic compound which has a -C≡N functional group. ...

Ester reactions

Ester saponification (basic hydrolysis)
Ester saponification (basic hydrolysis)

Esters react in a number of ways: Shortened length of Ester_Hydrolysis. ...

Hydrolysis is a chemical reaction or process in which a chemical compound reacts with water. ... Saponification of a lipid with potassium hydroxide. ... Structure of a carboxylic acid The 3D structure of the carboxyl group A space-filling model of the carboxyl group Carboxylic acids are organic acids characterized by the presence of a carboxyl group, which has the formula -C(=O)OH, usually written -COOH or -CO2H. [1] Carboxylic acids are Bronsted... Structure of a carboxylic acid Carboxylic acids, also known as alkanoic acids, are organic acids characterized by the presence of a carboxyl group and have the general chemical formula R-C(=O)-OH, also written as R-COOH, where R is a hydrogen or an alkyl group. ... For other uses, see Salt (disambiguation). ... The general structure of an amine Amines are organic compounds and a type of functional group that contain nitrogen as the key atom. ... Amide functional group Amides possess a conjugated system spread over the O, C and N atoms, consisting of molecular orbitals occupied by delocalized electrons. ... The Fries rearrangement is a rearrangement reaction of a phenyl ester to a hydroxy aryl ketone by catalysis of lewis acids . // Mechanism Despite many efforts a definitive reaction mechanism for the Fries rearrangement is not available. ... Diethyl malonate (DEM) has the structure (EtOOC)(CH2)(COOEt) Reactions Malonic ester synthesis DEM → monosubstituded acetic acid See also barbituric acid Categories: Malonates ... In chemistry, a nucleophile (literally nucleus lover) is a reagent which is attracted to centres of positive charge. ... In chemistry, an alkyl halide is an organic molecule of the form R_X, where X is a halide and R contains a carbon atom bonded to other functional groups or hydrogens. ... The Malonic Ester Synthesis is an organic chemistry reaction where diethyl malonate is alkylated at the carbon alpha to both carbonyl groups, and then converted to a substituted acetic acid. ... Deprotonation is a chemistry term that refers to the removal of a proton (hydrogen ion H+) from a molecule, forming the conjugate base. ... The Chan rearrangement in organic chemistry is a rearrangement reaction converting an acyloxy acetate in the presence of a strong base to a 2-hydroxy-3-keto-ester . ... Isocyanate is the chemical group of atoms -N=C=O (1 nitrogen, 1 carbon, 1 oxygen), as opposed to cyanate, -O-C≡N, which is formed from cyanogen in the normal -ate manner. ... The general structure of a hydroxamic acid A hydroxamic acid is a class of chemical compounds sharing the same functional group in which an amine is inserted into an carboxylic acid. ... The Lossen rearrangement is the chemical reaction of a hydroxamic acid 1 with a dehydration agent (such as tosyl chloride) to form the O-derivative 2, which spontaneously rearranges to form an isocyanate 3. ... Ester pyrolysis in organic chemistry is a vacuum pyrolysis reaction converting esters containing a β-hydrogen atom into the corresponding carboxylic acid and the alkene. ...

External links

References

  1. ^ IUPAC parent groups using traditional names
  2. ^ IUPAC naming of esters

  Results from FactBites:
 
ester: Definition and Much More from Answers.com (1542 words)
Esters of cellulose (cellulose triacetate) are used in photographic film, as a textile fiber (acetate rayon), and several have become important as thermoplastic materials.
Esters of unsaturated acids, for example, acrylic or methacrylic acid, are reactive and polymerize rapidly, yielding resins; thus, methyl methacrylate yields a polymethyl methacrylate resin (Lucite).
Esters of alcohols and inorganic acids include nitrate esters (e.g., nitroglycerin), which are explosive; phosphate esters, including such biologically important compounds as nucleic acids; and others that are used as flame retardants, solvents, plasticizers, gasoline and oil additives, and insecticides.
  More results at FactBites »

 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your location
Your comments
Please enter the 5-letter protection code


Lesson Plans | Student Area | Student FAQ | Reviews | Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms.