Results 71 to 80 of about 17,975 (276)

CuH-Catalyzed Regioselective Intramolecular Hydroamination for the Synthesis of Alkyl-Substituted Chiral Aziridines [PDF]

, 2017
This report details a general and enantioselective means for the synthesis of alkyl-substituted aziridines. This protocol offers a direct route for the synthesis of alkyl-substituted chiral aziridines from achiral starting materials.
Wang, Haoxuan, Yang, Jeffrey, Buchwald, Stephen Leffler   +2 more
core   +1 more source

On the Planarity of Heterocyclic Bay‐Substituted Perylenediimides: Insight into the Fluorescent Photoinduced Electron Transfer Sensing Framework

European Journal of Organic Chemistry, EarlyView.
Near‐infrared fluorescent pH indicators based on perylenediimide were constructed in a modular receptor–spacer–fluorophore–spacer–receptor format with heterocyclic amino moieties at the bay positions. Counterintuitively, the dibrominated intermediate with two heavy atoms is more emissive than the heterocyclic compounds.
Luke Camenzuli, Davide Benedetto Tiz, Nicola’ Agius, Konrad Szaciłowski, David C. Magri   +4 more
wiley   +1 more source

Elucidation of the Alternating Copolymerization Mechanism of Epoxides or Aziridines with Cyclic Anhydrides in the Presence of Halide Salts [PDF]

, 2023
Jiaxi Xu, Pengfei Zhang, Youyou Yuan, Nikos Hadjichristidis   +3 more
openalex   +1 more source

N‐Glycosyl Triazoline Glycomimetics via Huisgen Cycloaddition With an Electron‐Deficient Alkene and BF3‐Catalysed Triazoline Fragmentation to Aziridines

European Journal of Organic Chemistry, EarlyView.
Glycomimetics with triazoline and aziridine groups were synthesised via diastereoselective Huisgen cycloaddition from glycosyl azides. Density functional theory was applied to define the mechanism for BF3 promoted aziridine formation. Triazoline and aziridine derivatives were synthesised by diastereo‐ and regioselective Huisgen cycloaddition of 2,3,4,6‐
Aaron McCormack, Ashis Dhara, Lamis Alaa Eldin Refat, Mikael Bols, Paul V. Murphy   +4 more
wiley   +1 more source

Metodologia AGOA: a modelagem de clusters de hidratação no complexo aziridina···ácido fluorídrico AGOA methodology: modeling the hydration clusters for the aziridine···hydrofluoric complex

Química Nova, 2009
We present a theoretical study of solvent effect on C2H5N···HF hydrogen-bonded complex through the application of the AGOA methodology. By using the TIP4P model to orientate the configuration of water molecules, the hydration clusters generated by AGOA ...
Boaz G. Oliveira, Regiane C. M. U. Araújo, Antônio B. Carvalho, Mozart N. Ramos   +3 more
doaj   +1 more source

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

Dimerization of Lithiated Terminal Aziridines

Synfacts, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Hodgson, David M., Miles, Steven M.
openaire   +3 more sources

Pd-catalysed [3 + 3] annelations in the stereoselective synthesis of indolizidines

Beilstein Journal of Organic Chemistry, 2007
A [3 + 3] annelation of enantiomerically pure aziridine 7 provides the functionalised piperidine 8 that can be elaborated to the indolizidine skeleton in only 4 steps with good stereocontrol.
Olivier Y. Provoost, Andrew J. Hazelwood, Joseph P. A. Harrity   +2 more
doaj   +1 more source

A 7-Deazaadenosylaziridine Cofactor for Sequence-Specific Labeling of DNA by the DNA Cytosine-C5 Methyltransferase M.HhaI

Molecules, 2015
DNA methyltransferases (MTases) catalyze the transfer of the activated methyl group of the cofactor S-adenosyl-l-methionine (AdoMet or SAM) to the exocyclic amino groups of adenine or cytosine or the C5 ring atom of cytosine within specific DNA sequences.
Falk Kunkel, Rudi Lurz, Elmar Weinhold
doaj   +1 more source

Sericin Grafting onto Cashmere Fiber and Its Properties Investigation

Journal of Natural Fibers, 2022
Cashmere fiber is pretreated with oxygen low temperature plasma to increase the content of polar groups (-OH, -COOH) on the surface. Then by using aziridine crosslinker and polycarbodiimide crosslinker, the sericin with health-care function is grafted ...
Wen-Xiao Ma, Yi-Lin Wu, Cui Pu
doaj   +1 more source