Results 11 to 20 of about 9,447 (241)

The synthesis and characterization of some novel 5-chloro-2-(substituted alkoxy)-N-phenylbenzamide derivatives [PDF]

Journal of the Serbian Chemical Society, 2009
To obtain biologically active compounds, the synthesis of some new derivatives with an o-hydroxybenzamide structure was performed. The ethyl esters 4–6 were obtained by the reaction of 5-chloro-2-hydroxy-N-phenylbenzamide and chloro-substituted acid ...
IOANA M. C. IENAŞCU, ALFA X. LUPEA, IULIANA M. POPESCU, MIRABELA A. PĂDURE, ALINA D. ZAMFIR   +4 more
doaj   +3 more sources

A Chitosan Hydrochloride Mediated, Simple and Efficient Approach for the Synthesis of Hydrazones, their in vitro Antimycobacterial Evaluations, and Molecular Modeling Studies (Part III)

SynOpen, 2023
A simple, eco-friendly and straightforward synthesis of hydrazones has been devised that is conducted in the presence of chitosan Hydrochloride (chitosan·HCl) as catalyst in aqueous-ethanol medium at room temperature.
Suraj N. Mali, Anima Pandey, Bapu Thorat
doaj   +1 more source

Synthesis of indoles via alkylidenation of acyl hydrazides [PDF]

, 2009
Indoles have been synthesised via alkylidenation of acyl phenylhydrazides using phosphoranes and the Petasis reagent, followed by in situ thermal rearrangement of the product enehydrazines.
Commeureuc, A.G.J., EPSRC (Funder), Hisler, K., Murphy, J.A., WestCHEM (Funder), Zhou, S.Z.   +5 more
core   +1 more source

The alpha-effect in cyclic secondary amines: new scaffolds for iminium ion accelerated transformations [PDF]

, 2009
Five-membered secondary amine heterocycles containing an α-heteroatom were prepared and shown to be ineffective as catalysts for the iminium ion catalysed Diels–Alder reaction between cinnamaldehyde and cyclopentadiene.
Cavill, Julie L., Elliott, Richard L., Evans, Gareth, Gibbs, Timothy J. K., Jones, Ian L., Platts, James A, Porzelle, Achim, Tomkinson, Nick   +7 more
core   +1 more source

2-([1,2,4]triazolo[1,5-c]quinazoline-2-yl-)alkyl-(alkaryl-,aryl-)-amines and their derivatives. Message 2. The synthesis of (3Н-quinazoline-4-ylidene)hydrazides N-protected aminoacids, using a variety of amine-protecting approaches. Physical-chemical prop

Zaporožskij Medicinskij Žurnal, 2018
The synthetic potential of (3H-quinazoline-4-ylidene)hydrazides of carboxylic acids is significant in the context of new s-triazoloquinazolines creation and the obtained data of biological activity is a valid reason for the development of new methods of ...
Yu. V. Martynenko, M. S. Kazunin, I. S. Nosulenko, G. G. Berest, S. І. Kоvalenko, O. M. Kamyshnyi, N. M. Polishchuk   +6 more
doaj   +1 more source

Inhibitors of bacterial and plants urease [PDF]

, 2013
Urease is an important virulence factor for Helicobacter pylori and Proteus mirabilis as well as in environmental transformations of certain nitrogenous compounds.
Macegoniuk, Katarzyna
core   +2 more sources

On the Nature of the Rotational Energy Barrier of Atropisomeric Hydrazides

Molecules, 2023
N-N atropisomers represent a useful class of compounds that has recently received important attention from many research groups. This article presents an in-depth analysis of the energy barrier needed for the racemization process of atropoisomeric ...
Andrea Pellegrini, Laura Marcon, Paolo Righi, Giovanni Centonze, Chiara Portolani, Marco Capodiferro, Shilashi Badasa Oljira, Simone Manetto, Alessia Ciogli, Giorgio Bencivenni   +9 more
doaj   +1 more source

Synthesis and reactions of 1-amino-1,5,6,10b-tetrahydroimidazo[2,1-a]isoquinolin-2(3H)-ones [PDF]

, 2008
1-Amino-1,5,6,10b-tetrahydroimidazo[2,1-a]isoquinolin-2(3H)-ones, as previously unknown ring-annelated isoquinolines with a 3-aminoimidazolidin-4-one scaffold, were selectively prepared upon reacting 2-carbamoylmethyl- or 2-ethoxycarbonylmethyl-3,4 ...
De Kimpe, Norbert, Holzer, Wolfgang, Mangelinckx, Sven, Martynaitis, Vytas, Solovjova, Joana, Šačkus, Algirdas   +5 more
core   +2 more sources

Synthesis and Antibacterial Activity of New Azole, Diazole and Triazole Derivatives Based on p-Aminobenzoic Acid

Molecules, 2021
The p-aminobenzoic acid was applied for the synthesis of substituted 1-phenyl-5-oxopyrrolidine derivatives containing benzimidazole, azole, oxadiazole, triazole, dihydrazone, and dithiosemicarbazide moieties in the structure.
Birutė Sapijanskaitė-Banevič, Vykintas Palskys, Rita Vaickelionienė, Jūratė Šiugždaitė, Povilas Kavaliauskas, Birutė Grybaitė, Vytautas Mickevičius   +6 more
doaj   +1 more source

An overview of the synthesis of acyl hydrazides from aldehydes and reactions of the products thereof [PDF]

, 2017
Herein a review on the methods for the formation and reaction of acyl hydrazides will be given. There is particular focus on the synthesis of acyl hydrazides from aldehyde precursors with examination of the various approaches (e.g.
Chudasama, V, Shamsabadi, A
core   +1 more source