Results 1 to 10 of about 5,639 (227)

Substituted Aziridines by Lithiation—Electrophile Trapping of Terminal Aziridines. [PDF]

open access: yesChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
Hodgson, D, Humphreys, P, Ward, J
openaire   +4 more sources

Preparation and ring-opening reactions of N-diphenylphosphinyl vinyl aziridines

open access: yesBeilstein Journal of Organic Chemistry, 2013
Predominantly (E)-N-diphenylphosphinyl vinyl aziridines are prepared by a reaction of N-diphenylphosphinyl imines with α-bromoallyllithium in the presence of freshly fused ZnCl2.
Ashley N. Jarvis   +3 more
doaj   +2 more sources

Synthesis of oxazolinyl aziridines

open access: yesTetrahedron Letters, 1999
Abstract Aziridinyllithiums 4a and 4b , which are stable at low temperature, can be generated by deprotonation of 3a and 3b . Oxazolinyl aziridines 5a-j and 6a-b have been prepared by the reaction of oxazolinyl aziridinyllithiums 4a and 4b with electrophiles. Aziridines 6c and 6d were, instead, synthesized by a Darzens-like reaction
S. FLORIO   +3 more
openaire   +5 more sources

Organocatalyzed enantioselective desymmetrization of aziridines and epoxides

open access: yesBeilstein Journal of Organic Chemistry, 2013
Enantioselective desymmetrization of meso-aziridines and meso-epoxides with various nucleophiles by organocatalysis has emerged as a cutting-edge approach in recent years.
Ping-An Wang
doaj   +2 more sources

Mechanistic Insights into Lewis Acid-Catalyzed Formal [3 + 2] Cycloadditions of Aziridines: A Molecular Electron Density Theory Study [PDF]

open access: yesMolecules
The Lewis acid (LA)-promoted formal [3 + 2] cycloaddition (32CA) reaction of 2-phenyl-1-tosylaziridine (2PTA) with ketone has been studied within the framework of Molecular Electron Density Theory (MEDT) at the ωB97X-D/6-311G(d,p) computational level in ...
Luis R. Domingo   +2 more
doaj   +2 more sources

Dimerization of Lithiated Terminal Aziridines

open access: yesAngewandte Chemie - International Edition, 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.
David M Hodgson
exaly   +4 more sources

Coupling of 1-alkyl-2-(bromomethyl)aziridines with heteroatom-centered nucleophiles towards 2-[(heteroatom)methyl]aziridines

open access: yesARKIVOC, 2007
The reactivity of 1-alkyl-2-(bromomethyl)aziridines with respect to different types of oxygen-, nitrogen- and sulphur-centered nucleophiles has been evaluated, pointing to the conclusion that these substrates can be applied successfully as synthetic ...
Matthias D’hooghe, Norbert De Kimpe
doaj   +3 more sources

Aziridines: epoxides’ ugly cousins?

open access: yesChem. Soc. Rev., 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
Sweeney, Joseph B.
openaire   +3 more sources

A Review on Recent Approaches to the Asymmetric Synthesis of Aziridines Derivatives [PDF]

open access: yesJournal of Chemistry Letters, 2021
The aziridines are an important class of heterocyclic compounds that are used for the synthesis of high valuable compounds containing biological and natural products.
Farahnaz Salimi   +2 more
doaj   +1 more source

N-Aminopyridinium reagents as traceless activating groups in the synthesis of N-Aryl aziridines

open access: yesNature Communications, 2022
Aziridines are useful intermediates, present in important synthetic targets. Here, the authors show a strategy for the synthesis of N-aryl aziridines based on N-aminopyridinium reagents followed by Ni-catalyzed C–N cross-coupling of N-pyridinium ...
Hao Tan   +4 more
doaj   +1 more source

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