نتایج جستجو برای: hydrazides

تعداد نتایج: 849  

2013
Altan Bolag Hironobu Hayashi Pierre Charbonnaz Naomi Sakai Stefan Matile

Like beads on a string: A synthetic method for the directional construction of strings of spherical fullerenes along stacks of planar oligothiophenes is described. The key to success was the preparation of fullerenes with two solubilizing tri(ethylene glycol) tails (bold) and an aromatic aldehyde for covalent capture by hydrazides along the oligothiophene stacks (red). BOLAG, Alatengbaolige, et...

2008
Aamer Saeed Amara Mumtaz Hummera Rafique Kazuma Gotoh Hiroyuki Ishida

The title compound, C(10)H(15)N(2)O(4) (+)·Cl(-), was obtained as an unexpected by-product during the synthesis of 1-[2-(substituted ar-yl)]-3-methyl-pyrazol-5-ones. The hydrazide group is essentially planar, with an r.s.m. deviation of 0.020 (2) Å, and is oriented at a dihedral angle of 30.52 (3)° with respect to the benzene ring. In the crystal structure, the cations and anions are linked thr...

Journal: :Organic & biomolecular chemistry 2013
Ruth I J Amos Brendon S Gourlay Brian F Yates Carl H Schiesser Trevor W Lewis Jason A Smith

Aryl hydrazides are oxidised to acyl radicals through a mechanism involving diimide intermediates that are prone to nucleophilic acyl substitution. This oxidation occurs regardless of the oxidant involved, however there is no evidence that the acyl radical formed undergoes further oxidation to the corresponding acylium ion, even in the presence of strong oxidants. This study may provide insight...

Journal: :Organic & biomolecular chemistry 2015
Avik Kumar Bagdi Shubhanjan Mitra Monoranjan Ghosh Alakananda Hajra

Iodine-catalyzed regioselective sulfenylation of imidazo[1,2-a]pyridines via C(sp(2))-H bond functionalization has been achieved using sulfonyl hydrazides as a thiol surrogate. A library of 3-sulfanylimidazopyridines with broad functionalities was synthesized under metal and oxidant-free practical reaction conditions. This methodology is also applicable for the regioselective sulfenylation of i...

2017
Beth Hoskins

system (1). The studies of Killam (2) and Killam and Bain (3), whieh used convulsant hydrazides and demonstrated thatr GABA has an inhibitory function in the CNS, suggested a role for GABA in neurotoxicology. There are two types of GABA receptors, GABIVA and GABAB, The GABAA receptor is a membrane bound eomplex consisting of at least three binding sites for GABA, benzodiazepines, the barbiturat...

Journal: :Chemical communications 2014
Shan Tang Yong Wu Wenqing Liao Ruopeng Bai Chao Liu Aiwen Lei

In this work, we have described an alternative alkenylation approach to illustrate the metal-like behaviour of iodine in cross-coupling reactions. Alkenylation could proceed through iodide catalysed radical initiation, radical addition and iodine promoted alkenyl functionality recovery. Catalytic HI elimination similar to the β-hydride elimination of transition metals was realized for the radic...

Journal: :Transactions of the Indian Institute of Metals 2021

Abstract The present work highlights the corrosion inhibition action of two indole-3-hydrazides with varying alkyl chain lengths: 2-(1 H -indol-3-yl)acetohydrazide (IAH) and 4-(1 -indol-3-yl)butanehydrazide (IBH) against mild steel (MS) in 0.5 M hydrochloric acid (HCl) solution using electrochemical gravimetric measurement methods. Both IAH IBH behaved as mixed-type inhibitors, their anticorros...

Journal: :Russian Journal of General Chemistry 2022

Abstract Novel hydrazone and 1,2,4-triazole-3-thione derivatives were obtained via the reaction of N 1 , 3 ,2-triaryl-6-hydroxy-6-methyl-4-oxocyclohexane-1,3-dicarboxamides with acid hydrazides thiosemicarbazide, respectively. Structure products was proved using IR H NMR spectroscopy methods. Some synthesized compounds tested for antimicrobial activity

Journal: :Bulletin of the Chemical Society of Japan 1968

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