Results 91 to 100 of about 18,352 (245)

Determination of Stability for imines derived from carbonyl compounds by conductivity measurements

Tikrit Journal of Pure Science, 2018
The project explained for the first time, how conductivity method was used in the determination of stability of some imines derived from mother compounds 2-acetyl pyridine, 3 or 4 –hydroxy benzaldehyde, and others. The method as found, simple precise
A.S.P. Azzouz, D.B.AL-Bakzo
doaj   +1 more source

One-pot asymmetric cyclocarbohydroxylation sequence for the enantioselective synthesis of functionalised cyclopentanes [PDF]

, 2010
International audienceA new method has been developed for the enantioselective synthesis of highly functionalised cyclopentanes bearing up to three stereogenic centres with very high stereoselectivity.
Bonne, Damien, Dulcère, Jean-Pierre, Lettieri, Grégory, Raimondi, Wilfried, Rodriguez, Jean   +4 more
core   +3 more sources

Monosubstituted N‐Arylhydroxylamine Chemistry: Integrating Contemporary Synthetic Approaches for the Efficient Construction of Diverse Heterocyclic Scaffolds

Chemistry – A European Journal, EarlyView.
Monosubstituted N‐arylhydroxylamines represent a unique subclass of hydroxylamines that act as pivotal intermediates in redox transformations and as versatile platforms for further synthetic transformations. They serve as key building blocks in the synthesis of architecturally complex heterocycles and other valuable organic compounds.
Michael G. Kallitsakis, Kyriakos D. Nikopoulos, Ioannis N. Lykakis   +2 more
wiley   +1 more source

Cycloaddition reactions of nitrosoalkenes, azoalkenes and nitrile oxides mediated by hydrotalcite [PDF]

, 2012
Mg:Al 3:1 hydrotalcite (Ht), used in catalytic quantities, promotes the generation of nitrosoalkenes, azoalkenes and nitrile oxides. These can be intercepted in situ by heterocycles and olefins in [4+2] and [3+2] cycloaddition reactions, producing ...
Lemos, A., Lourenço, J. P.
core  

Molecular interconversion behaviour in comprehensive two-dimensional gas chromatography [PDF]

, 2004
Comprehensive two-dimensional gas chromatography (GC x GC) is shown to provide information on dynamic molecular behaviour (interconversion), with the interconversion process occurring on both columns in the coupled-column experiment.
Aryusuk, K, Krisnangkura, K, Marriott, P, Ryan, D, Schurig, V, Shellie, R, Trapp, O   +6 more
core   +1 more source

Bioresponsive pseudoGlucosinolates (psGSLs) Release Isothiocyanates (ITCs) in the Presence of Nitroreductases

Chemistry – A European Journal, EarlyView.
This work introduces the concept of pseudoglucosinolates (psGSLs) and reports the synthesis and evaluation of nitroreductase‐responsive psGSLs. These compounds represent a complementary prodrug strategy to natural glucosinolates (GSLs) for the controlled release of isothiocyanates (ITCs), enabling bio‐responsive protein labeling, as demonstrated in ...
Claire C. Jimidar, Charity S. G. Ganskow, Mervic D. Kagho, Aishi Chakrabarti, Lorenz Wiese, Michael Zollo, Ulrike Beutling, Leona C. Cesar, Julia Morud, Kamila Bugaj, Mark Brönstrup, Stephan A. Sieber, Stephan M. Hacker, Philipp Klahn   +13 more
wiley   +1 more source

A class of pyrrole derivatives endowed with analgesic/anti-inflammatory activity [PDF]

, 2013
We report the synthesis and bio-pharmacological evaluation of a class of pyrrole derivatives featuring a small appendage fragment (carbaldehyde, oxime, nitrile) on the central core.
Alfonso S, Battilocchio C, Biava M, Consalvi S, Di Cesare Mannelli L, Di Francesco L, Ghelardini C, Giordani A, Pace S, Patrignani P, Poce G, Porretta GC, Rossi A, Sautebin L, Schenone S   +14 more
core   +1 more source

Photoinduced Copper‐Catalyzed para‐Selective C–H S‐Arylation of Benzylic Oxime Carbonates with Sulfenamides

Chinese Journal of Chemistry, EarlyView.
We present a dual copper/photoredox catalytic system that enables the para‐selective C–H functionalization of benzyl alcohols with sulfenamides. This approach facilitates the para‐selective C–H sulfilimination of benzylic oxime carbonates through an orchestrated sequence involving photoinduced decarboxylation/dearomatization of oxime carbonates, copper‐
Sanhua Zhang, Youcan Zhang, Jingfang Han, Ya Li, Xiao‐Feng Wu   +4 more
wiley   +1 more source

Nanoroughness, Surface Chemistry and Drug Delivery Control by Atmospheric Plasma Jet on Implantable Devices [PDF]

, 2018
Implantable devices need specific tailored surface morphologies and chemistries to interact with the living systems or to actively induce a biological response also by the release of drugs or proteins.
Ambrosi, Emmanuele, Brun, Paola, Genova, Tullio, Mattei, Giovanni, Michieli, Niccol\uf2 T, Moroni, Lorenzo, Mussano, Federico, Patelli, Alessandro, Scopece, Paolo   +8 more
core   +3 more sources

Push–Pull Ynamines and Push–Pull Ynamides: Synthesis, Structure, Reactivity, and Application

European Journal of Organic Chemistry, EarlyView.
Push–pull ynamines and push–pull ynamides, which carry an EWG and an amino or amido group as EDG, are highly interesting classes of EDG‐EWG alkynes that have been intensively studied due to their exceptional reactivity. In this review, the synthesis, structure, reactivity, and application of push–pull ynamines, push–pull ynecarbamates, push–pull ...
Hans‐Joachim Gais
wiley   +1 more source