نتایج جستجو برای: reactive nitrogen intermediate

تعداد نتایج: 396411  

Journal: :Journal of Applied Physics 2021

Plasma-produced reactive oxygen and nitrogen species are expected to promote micropollutant degradation in water more generally liquids. Among these species, the hydroxyl radical (HO•) is recognized as being most efficient. Molecular dynamics simulations were carried out determine reaction steps of HO• interaction with paracetamol molecule water, a pharmaceutical residue that frequently detecte...

Bita Mohtat Mahsa Mahpeyma,

The reactive intermediate generated by the addition of tert-butyl and 1,1,3,3-tetramethyl butyl isocyanide and cyclohexyl isocyanide to dialkyl acetylenedicarboxylate was trapped by 3-hydroxy pyridine to produce highly functionalized 4H-chromenes in fairly good  yields

Journal: :Journal of the American Chemical Society 2005
Liming Zhang Sergey A Kozmin

We have described an efficient gold-catalyzed double cyclization of 1,5-enynes to afford a range of heterobicyclic compounds, including oxabicylclo[3.2.1]octenes, azabicyclo[3.2.1]octenes, oxaspiro[5.4]decene, azaspiro[5.4]decene, oxaspiro[5.5]undecene, oxabicyclo[4.3.0]nonene, azabicyclo[4.3.0]nonene, and oxabicyclo[4.4.0]decene. The mechanism of this reaction is proposed to involve a chemosel...

Journal: :Molecules 2017
Sibel Suzen Hande Gurer-Orhan Luciano Saso

During the last decade there has been growing interest in physical-chemical oxidation processes and the behavior of free radicals in living systems. Radicals are known as intermediate species in a variety of biochemical reactions. Numerous techniques, assays and biomarkers have been used to measure reactive oxygen and nitrogen species (ROS and RNS), and to examine oxidative stress. However, man...

2015
V. Helan A. V. Gulevich V. Gevorgyan

The transition-metal-catalyzed denitrogenative transannulation of pyridotriazoles represents an efficient method for the synthesis of fused nitrogen-containing heterocycles. This method is based on the ability of pyridotriazole to exist in an equilibrium with diazo-form A, which can be trapped with Rh(II) to form the reactive pyridyl carbene intermediate B, capable of reacting with terminal alk...

Journal: :JBIC Journal of Biological Inorganic Chemistry 2017

Journal: :Current medicinal chemistry 2004
Earl R Stadtman

Organisms are constantly exposed to many different forms of reactive oxygen species and reactive nitrogen species that damage proteins, nucleic acids, and lipids, leading to loss of biological function. The possibility that reactive oxygen/nitrogen-mediated protein damage contributes to the aging process is supported by results of many studies showing that aging is associated with the accumulat...

Bita Mohtat Mahsa Mahpeyma,

The reactive intermediate generated by the addition of tert-butyl and 1,1,3,3-tetramethyl butyl isocyanide and cyclohexyl isocyanide to dialkyl acetylenedicarboxylate was trapped by 3-hydroxy pyridine to produce highly functionalized 4H-chromenes in fairly good  yields.

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