نتایج جستجو برای: o aminophenol

تعداد نتایج: 554926  

Journal: :Dalton transactions 2014
Ruiguo Zhao Taotao Liu Liying Wang Haiyan Ma

A series of titanium trichloride complexes , ligated with claw-type tetradentate aminophenolate ligands were synthesized from the direct reaction of TiCl4(THF)2 with 1 equiv. of the corresponding aminophenol in the presence of triethylamine. For comparison purposes, titanium isopropoxide complexes were also synthesized via the reaction of Ti(O(i)Pr)4 and 1 equiv. of the proligand. Similar react...

2004
Norberto Farfán Teresa Mancilla Rosa Santillan Atilano Gutiérrez Luis S. Zamudio-Rivera Hiram I. Beltrán

The reaction of salicylaldehyde (1), o-aminophenols (2a–2f), and di-n-butyltin oxide (3) to give six di-n-butyltin compounds (4a–4f) was achieved in good yields. All compounds were characterized by H, C, N, Sn NMR, mass spectrometry, IR, elemental analysis and in the case of compounds 4a, 4b, 4d and 4e by X-ray diffraction analysis. Compound 4a crystallized with trigonal bipiramidal (TPB) geome...

2011
MEHDI VADI

Present research paper deals with the adsorption isotherms rate 2-amino phenol and 4-amino phenol on multi-wall carbon nanotube which performed by changing the amount of solution concentration in ppm unit. According to difference between two under studied substances are in substitution of NH2 in ortho and para position , more adsorption of 4-aminophenol on carbon nanotube demonstrate that para ...

2003
A. Mohammad N. Jabeen

The analytical potential of tri-n-butyl phosphate (TBP) as impregnant in the thin-layer chromatographic separation of mixtures of amines, phenols, or metal ions has been investigated. Silica gel impregnated with 0.001 M TBP as stationary phase and an aqueous micellar solution (0.01 M) of CTAB, a cationic surfactant, as mobile phase was found to be the best chromatographic system for achieving i...

Journal: :Molecules 2014
Kazumasa Wakamatsu Hitomi Tanaka Keisuke Tabuchi Makoto Ojika Fabio A Zucca Luigi Zecca Shosuke Ito

Neuromelanin (NM) is produced in dopaminergic neurons of the substantia nigra (SN) and in noradrenergic neurons of the locus coeruleus (LC). The synthesis of NM in those neurons is a component of brain aging and there is the evidence that this pigment can be involved in the pathogenesis of neurodegenerative diseases such as Parkinson's disease. NM is believed to derive from the oxidative polyme...

Journal: :Applied and environmental microbiology 2003
Shinji Takenaka Susumu Okugawa Maho Kadowaki Shuichiro Murakami Kenji Aoki

Burkholderia sp. strain AK-5 utilized 4-aminophenol as the sole carbon, nitrogen, and energy source. A pathway for the metabolism of 4-aminophenol in strain AK-5 was proposed based on the identification of three key metabolites by gas chromatography-mass spectrometry analysis. Strain AK-5 converted 4-aminophenol to 1,2,4-trihydroxybenzene via 1,4-benzenediol. 1,2,4-Trihydroxybenzene 1,2-dioxyge...

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