CE ÎNSEAMNĂ NITRATION ÎN ENGLEZĂ?
nitrarea
Nitrarea este o clasă generală a procesului chimic pentru introducerea unei grupări nitro într-un compus chimic organic. Mai slab, termenul este, de asemenea, aplicat incorect în diferite procese de formare a esterilor nitrați între alcooli și acid azotic, așa cum se întâmplă în sinteza nitroglicerinei. Diferența dintre structura rezultată a compușilor nitro și a nitraților este aceea că atomul de azot din compușii nitro este legat direct de un atom de non-oxigen, de obicei carbon sau alt atom de azot, în timp ce în esteri de azot, numiți și nitrați organici, la un atom de oxigen care, la rândul său, este legat de obicei la un atom de carbon. Există multe aplicații industriale majore de nitrare în sens strict; cele mai importante în volum sunt pentru producerea de compuși nitroaromatici cum ar fi nitrobenzenul. Reacțiile de nitrare sunt utilizate în mod special pentru producerea de explozivi, de exemplu conversia guanidinei la nitroguanidină și conversia toluenului în trinitrotoluen. Cu toate acestea, acestea sunt de importanță majoră ca intermediari și precursori chimici. Milioane de tone de nitroaromatice sunt produse anual.
Definiția nitration în dicționarul Engleză
Prima definiție a nitrării în dicționar este acțiunea sau procesul de tratare cu acid azotic sau nitrat. O altă definiție a nitrării este acțiunea sau procesul de transformare într-un nitrat. Nitrarea este, de asemenea, acțiunea sau procesul de a face să se supună procesului chimic în care o grupare nitro este introdusă într-o moleculă.
CĂRȚI ÎN ENGLEZĂ ÎN LEGĂTURĂ CU «NITRATION»
Descoperă întrebuințarea
nitration în următoarea selecție bibliografică. Cărți în legătură cu
nitration și extrase din aceasta pentru a furniza contextul de întrebuințare al acestuia în literatura Engleză.
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2
Nitration and Aromatic Reactivity
First published in 1971 this volume claims that nitration is important for two reasons.
3
Targets of Protein
Nitration in Mitochondria During Aging
The main goal of this study was to test the hypothesis that specific proteins undergo an age-related increase in nitration, which results in their functional alteration, and that calorie restriction (CR), a regimen which prolongs the life ...
4
The Nitro Group in Organic Synthesis
The mechanism of this nitration is well discussed in Ref. 27. This method has
several merits over the conventional ones. As the reaction proceeds under
neutral conditions, acid-sensitive compounds are nitrated without decomposition
of ...
5
Nitration: recent laboratory and industrial developments
Presents synthesis of new explosives and propellant ingredients, including cage and heterocyclic compounds and new energetic polymers. Reports non-acidic nitration of compounds using N2O5.
Lyle Frederick Albright, Richard V. C. Carr, Robert J. Schmitt,
1996
6
Comprehensive Experimental Chemistry
13.6 Preparation of p-Nitroacetanilide p-Nitroacetanilide is prepared by the
nitration of acetanilide with a mixture of conc. sulphuric acid and conc, nitric acid (
nitrating mixture). The main product is p-nitroacetanilide. A minor product ...
V. K. Ahluwalia, Sudha Raghav,
1997
7
Acetyl-nitrate
Nitration of Toluene by Zeolite Catalysts and ...
Nitrated compounds are the principle starting materials for the syntheses of numerous commercially-important classes of chemicals.
Riffard P. Jean-Gilles,
2007
8
A Proteomic Study of Protein Tyrosine
Nitration
These are good and well accepted separation and detection methods, however they are only qualitative and don't tell us information about the specific sites of nitration.
9
Heterogeneous Catalytic Application of Octahedral Molecular ...
DISCUSSION 4.1 Catalytic Nitration of Phenol The first nitration reaction was
done with 0.050 g of K-OMS-2, 1 mmol of phenol, 10 mL of 1,2-dichloroethane as
solvent and 1.5 mmol of concentrated nitric acid (70 wt% in water) was added at ...
10
Advances in Heterocyclic Chemistry
Thus electrophilic thiocyanation, followed by acetylation and nitration gave the
pentasubstituted benzene 11. Reduction with dithiothreitol gave the
corresponding thiol that was directly alkylated with bromoacetate to give 12.
Finally, reaction ...
ȘTIRI NOI CARE INCLUD TERMENUL «NITRATION»
Află ce ziare naționale și internaționale au scris despre și cum este întrebuințat termenul
nitration în contextul următoarelor știri.
Long-term phosphodiesterase 5 inhibitor administration reduces …
The formation of the specific product 3-nitrotyrosine through the nitration of tyrosyl residues has been taken as an accurate biomarker of ... «Nature.com, Iul 15»
Nitrochlorobenzene market production capacity and forecasts to …
It is a versatile organic chemical compound manufactured by benzene nitration using sulfuric & nitric acid mixtures. For chemical production ... «WhaTech, Iul 15»
Forecasts of Growth in the Nitric Acid Market
Nitric acid is popularly used in reagents required for nitration reactions. Unstable nature of several nitric acid-based compounds allows their ... «Digital Journal, Iul 15»
Blogroll: Patently inventive
... Chemistry Laboratory (http://go.nature.com/W4RmXy) tells a cautionary tale of a nitration gone wrong and the importance of a good lab coat. «Nature.com, Iun 15»
Suppression of acute pancreatitis by L-lysine in mice
The binding of peroxynitrite with proteins led to nitration of tyrosine to form nitrotyrosine, which is a specific a marker for peroxynitrite induced ... «BMC Blogs Network, Iun 15»
Aniline Market Analysis, Size And Forecasts To 2022: Grand View …
Aniline which is also known as aminobenzene or phenylamine, is an aromatic amine produced by ensuing nitration and hydrogenation of ... «Press Release Rocket, Iun 15»
Monitoring Oil Degradation in Gas Engines
"What are the acceptable limits of nitrogen oxides in the exhaust of gas engines? Recently, one of our customers was facing nitration issues in a gas engine. «Machinery Lubrication Magaz, Iun 15»
Nano One Reports On Testing Of Next Generation Battery Materials
They are recognized worldwide as a leader in the fields of nitration, sulfuric acid and electrochemistry. In addition to carrying out large ... «Stockhouse, Iun 15»
Widening NWE-USGC toluene arbitrage attracts interest: sources
The European spot price of nitration grade toluene was assessed at $811.50/mt FOB ARA on Monday. Article continues below. «Platts, Iun 15»
Buy Aarti Industries; target of Rs 396: CD Equisearch
Both working capital and asset turnover ratios would improve with commissioning of ncb, pda, nitration and chlorination units. Yet intense ... «Moneycontrol.com, Iun 15»