CO OZNACZA SŁOWO ESTER
Ester
Estry są związkami chemicznymi składającymi się z karbonylu przylegającego do wiązania eteru. Są one uzyskiwane przez reakcję kwasu oksykowego z hydroksylowym związkiem, takim jak alkohol lub fenol. Estry pochodzą zwykle z kwasu nieorganicznego lub kwasu organicznego, w którym co najmniej jedna grupa -OH jest zastąpiona grupą -O-alkilową, a najczęściej z kwasów karboksylowych i alkoholi. Oznacza to, że estry tworzą się przez kondensację kwasu z alkoholem. Estery są wszechobecne. Większość naturalnie występujących tłuszczów i olejów to estry kwasów tłuszczowych gliceryny. Estry o niskiej masie cząsteczkowej są powszechnie stosowane jako substancje zapachowe i znajdują się w olejkach eterycznych i feromonach. Fosforany tworzą szkielet cząsteczek DNA. Estry azotanowe, takie jak nitrogliceryna, znane są ze swoich właściwości wybuchowych, a poliestry są ważnymi tworzywami sztucznymi, z monomerami połączonymi ugrupowaniami estrowymi.
Definicja słowa ester w słowniku
Definicja estru w słowniku jest jedną z klas związków wytwarzanych w reakcji między kwasami i alkoholami z eliminacją wody. Estry o niskiej masie cząsteczkowej, takie jak octan etylu, są zazwyczaj lotnymi pachnącymi cieczami; tłuszcze są solidnymi estrami.
KSIĄŻKI POWIĄZANE ZE SŁOWEM «ESTER»
Poznaj użycie słowa
ester w następujących pozycjach bibliograficznych Książki powiązane ze słowem
ester oraz krótkie ich fragmenty w celu przedstawienia kontekstu użycia w literaturze.
1
Woman's Role in Economic Development
First Published in 2007. Routledge is an imprint of Taylor & Francis, an informa company.
Ester Boserup, Su Fei Tan, Camilla Toulmin,
2013
2
Chemistry and Technology of Cyanate
Ester Resins
The work is primarily aimed at materials scientists and polymer technologists involved in research and development in the chemical, electronics, aerospace and adhesives industries.
3
Making Fast Food: From the Frying Pan Into the Fryer
Ester Reiter worked full-time at a Burger King outlet for ten months gathering information for this study.
4
Ester Formation and Hydrolysis and Related Reactions
If the addition of a molecule of solvent (water or alcohol) to the protonated ester
or acid, and probably also the acid-catalyzed breakdown of the tetrahedral
intermediate, are rate-determining. the response to substitution of the overall
reaction ...
R.G. Compton, C.H. Bamford, C.F.H. Tipper†,
1972
5
The Conditions of Agricultural Growth: The Economics of ...
First Published in 1993. Routledge is an imprint of Taylor & Francis, an informa company.
6
Mayors and Money: Fiscal Policy in New York and Chicago
Tracing their fortunes from the 1930s to the present day, Ester R. Fuchs examines key policy decisions which have influenced the political structures of these cities and guided them into, or clear of, periods of economic crisis.
7
Greene's Protective Groups in Organic Synthesis
12 h 0 BE3 - EtZO, I15°C 0 ROCCl + —> 4* )_R 75485% CH2C12 O O 75I90%
H0 OZCR 0B0 Ester Ref. 3 This is one of the few methods available for the direct
and efficient conversion of an acid, via the acid chloride, to an ortho ester.
Peter G. M. Wuts, Theodora W. Greene,
2006
8
Comprehensive Organic Synthesis: Reduction
only indirect importance in this chapter since the ester acyl fragment is not
converted to a primary alcohol. Deoxygenation via ester radical anion cleavage
is the major reaction pathway when esters are reduced in homogeneous solution
in the ...
Barry M. Trost, Ian Fleming,
1991
9
Introduction to Organic and Biochemistry
O O H CH3COCH2CH3 H2O CH3COH CH3CH2OH Ethyl acetate Acetic acid
Ethanol Hydrolysis of an ester can also be carried out using a hot aqueous base,
such as aqueous NaOH. This reaction is often called saponification, a reference
to ...
Frederick Bettelheim, William Brown, Mary Campbell,
2009
10
Proceedings of the World Conference on Palm and Coconut Oils ...
Worldwide activity in the development of a-sulfonated fatty methyl ester (methyl
ester sulfonate, MES) for laundry and personal care products has increased
rapidly in recent years. Supplies of detergent-quality fatty acid methyl esters (ME)
have ...
Edward C. Leonard, Edward George Perkins, Arno Cahn,
1999
WIADOMOŚCI, KTÓRE ZAWIERAJĄ SŁOWO «ESTER»
Sprawdź, o czym dyskutuje się w prasie krajowej i zagranicznej oraz jak jest stosowane słowo
ester w wiadomościach.
Bradenton couple, Ester Deneus and Kantral Brooks, killed in their …
Brandenton Police identified the victims as Ester Deneus and Kantral Brooks, both were 29. "She's a good person, a good mother," explained ... «ABC Action News, Lip 15»
Bel-Ray Synthetic Ester 4T Oil Formulated For High-Performance …
Bel-Ray's EXS Synthetic Ester 4T Engine Oil is the brand's highest performing synthetic engine oil for multi-cylinder touring, sport and racing ... «Motorcycle.com, Lip 15»
Lürssen To Debut Ester III At Monaco Yacht Show
Ester III was delivered by Lürssen in autumn 2014, and will now begin preparations for her first showcase at the Monaco Yacht Show this ... «Superyachts.com, Lip 15»
Wilful Disregard by Lena Andersson review – succinct, raw and …
When 31-year-old poet and essayist Ester Nilsson is invited to give a lecture about the “magnificent and singular” artist Hugo Rask, she finds ... «The Guardian, Lip 15»
Company Update (NYSE:GE): General Electric Company Introduces …
Transformers represent the most significant fire safety challenge in electrical substations. By using a less-flammable synthetic ester liquid as a ... «Smarter Analyst, Lip 15»
Pop singer Pearl maintains her jazzy roots
She also has begun working with such hitmakers as Ester Dean and Dr. Luke, and is hoping to score some film and television placements. «Amarillo.com, Lip 15»
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The judges found that upon her death in 2007, Ester Hoffe had illegally bequeathed the collection to her daughters, after having, also illegally, ... «Algemeiner, Lip 15»
Texas Bikers Arrested After Waco Shootout Say They Are Innocent
Ester, 46, is a housewife. She rides a big Honda and wears a black leather vest with patches for the Queens of Sheba Motorcycle Club — a ... «NPR, Lip 15»
Lürssen to present Ester III at Monaco Yacht Show
Launched in May 2014 is the 66 meter Lürssen Ester III which will be presented at this year's Monaco Yacht Show. Designed by the acclaimed ... «Superyacht Times, Lip 15»
Woman attacked and robbed walking to her car in Biloxi
"This can happen to you and it might because I never thought it would happen to me and it did," Lindsey Ester said. It was 8:45 Monday evening ... «WLOX, Lip 15»