Benzobis(imidazolium)-Cucurbit[8]uril Complexes for Binding and Sensing Aromatic Compounds in Aqueous Solution

2010 ◽  
Vol 16 (46) ◽  
pp. 13716-13722 ◽  
Author(s):  
Frank Biedermann ◽  
Urs Rauwald ◽  
Monika Cziferszky ◽  
Kyle A. Williams ◽  
Lauren D. Gann ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aromatic Compounds

2-Amino-3-hydroxy-4-methylthiazoliumchlorid. Ein neues Reagens zur Bestimmunung von Nitrit.

1976 ◽  
Vol 31 (7) ◽  
pp. 981-982 ◽  
Author(s):  
G. Entenmann ◽  
H. Herter ◽  
H. Lay
Keyword(s):  
Aqueous Solution ◽  
Azo Dyes ◽  
Aromatic Compounds ◽  
Colour Reaction ◽  
Photometric Detection ◽  
Coupling Components

After diazotation 2-amino-3-hydroxythiazolium chlorides react with activated aromatic compounds to build azo dyes. In absence of coupling components 2-amino-3-hydroxy-4-methylthiazolium chloride gives a colour reaction with nitrite ions, which is suitable for photometric detection of nitrite in aqueous solution.

scholarly journals Zum Mechanismus der Hydroxylierungen mit molekularem Sauerstoff und Zinn(II)-Komplexen

1969 ◽  
Vol 24 (5) ◽  
pp. 583-588 ◽  
Author(s):  
Volker Ullrich ◽  
Hansjürgen Staudinger
Keyword(s):  
Aqueous Solution ◽  
New Species ◽  
Oxygen Atom ◽  
Molecular Oxygen ◽  
Aromatic Compounds ◽  
Oxygen Molecule ◽  
Active Oxygen ◽  
Hydroxyl Group ◽  
Phosphate Complex ◽  
A New Species

Reduction of molecular oxygen by a stannous phosphate complex in aqueous solution leads to a new species of active oxygen capable of hydroxylating aliphatic and aromatic compounds. The hydroxylation reactions are shown to require two electrons per oxygen molecule reduced. The oxygen atom of the hydroxyl group is completely derived from molecular oxygen. This new mechanism has been proposed as a model for mixed function oxygenases.

scholarly journals Adsorption of Aromatic Compounds from Aqueous Solution by a Hypercrosslinked Polymeric Adsorbent with Sulphonic Groups

2003 ◽  
Vol 21 (10) ◽  
pp. 921-933 ◽  
Author(s):  
Hai-Ling Wang ◽  
Jin-Long Chen ◽  
Ai-Min Li ◽  
Zhi-Cai Zhai ◽  
Zheng-Hao Fei ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aromatic Compounds ◽  
Polymeric Adsorbent ◽  
Hypercrosslinked Polymeric Adsorbent

The fate of peroxyl radicals in aqueous solution

1997 ◽  
Vol 35 (4) ◽  
pp. 9-15 ◽  
Author(s):  
Clemens von Sonntag ◽  
Peter Dowideit ◽  
Fang Xingwang ◽  
Ralf Mertens ◽  
Pan Xianming ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aromatic Compounds ◽  
Advanced Oxidation Processes ◽  
Room Temperature ◽  
Oxidative Degradation ◽  
High Reactivity ◽  
Peroxyl Radicals ◽  
Oh Radical ◽  
Oxidation Processes ◽  
Water And Wastewater

The reactions of peroxyl radicals occupy a central role in oxidative degradation. Under the term Advanced Oxidation Processes in drinking-water and wastewater processing, procedures are summarized that are based on the formation and high reactivity of the OH radical. These react with organic matter (DOC). With O2, the resulting carbon-centered radicals O2 give rise to the corresponding peroxyl radicals. This reaction is irreversible in most cases. An exception is hydroxycyclohexadienyl radicals which are formed from aromatic compounds, where reversibility is observed even at room temperature. Peroxyl radicals with strongly electron-donating substituents eliminate O2.−, those with an OH-group in a-position HO2.. Otherwise organic peroxyl radicals decay bimolecularly. The tetroxides formed in the first step are very short-lived intermediates and decay by various pathways, leading to molecular products (alcohols, ketones, esters and acids, depending on the precursor), or to oxyl radicals, which either fragment by scission of a neighbouring C-C bond or, when they carry an a-hydrogen, undergo a (water-assisted) 1,2-H-shift.

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