نتایج جستجو برای: Buchwald-Hartwig reaction

تعداد نتایج: 412816  

Journal: :nanochemistry research 2016
marzieh ghotbinejad ahmad r. khosropour iraj mohammadpoor-baltork majid moghadam shahram tangestaninejad

a powerful and convenient reaction procedure for the c-n coupling reaction (the buchwald-hartwig reaction), yielding products of n-arylanilines and n-arylamines in both conventional heating and microwave irradiation has been reported. the protocol utilizes a stable and new supper ferromagnetic nanoparticle chelating n-heterocyclic dicarbene palladium(ii) complex (pd-nhc) as catalyst which helps...

Journal: Nanochemistry Research 2016

A powerful and convenient reaction procedure for the C-N coupling reaction (the Buchwald-Hartwig reaction), yielding products of N-arylanilines and N-arylamines in both conventional heating and microwave irradiation has been reported. The protocol utilizes a stable and new supper ferromagnetic nanoparticle chelating N-heterocyclic dicarbene palladium(II) complex (Pd-NHC) as catalyst which helps...

Journal: :Organic letters 2005
Zhiyong Suo Mikhail Drobizhev Charles W Spangler Niklas Christensson Alexander Rebane

[structure: see text] A new fluorophore, tri(9,9-diethyl-9H-fluorenyl)amine, was synthesized by the Buchwald-Hartwig reaction of 2-aminofluorene, and based on this molecule three more fluorophores were prepared that exhibit a very large intrinsic three-photon absorption in the near-IR region, which scales as a third power of the bridge length.

Journal: :Organic & biomolecular chemistry 2008
Mark J Cawley F Geoffrey N Cloke Richard J Fitzmaurice Stuart E Pearson James S Scott Stephen Caddick

Continuing efforts to establish a more general "user-friendly" protocol for the palladium-catalysed arylation of amines (Buchwald-Hartwig reaction) are described herein. Significant advances have been made through the use of the versatile (SIPr)Pd(methallyl)Cl complex in conjunction with the reliable base lithium hexamethyldisilazide (LHMDS).

Journal: :Chemical communications 2014
Minjune Kim Yeonjoon Kim Jong Wook Hong Seihwan Ahn Woo Youn Kim Sang Woo Han

A systematic study of heterogeneous Buchwald-Hartwig amination using shape-controlled Pd nanocrystals with distinctly different surface facets is presented.

2011
Carolin Fischer Burkhard Koenig

N-Arylated aliphatic and aromatic amines are important substituents in many biologically active compounds. In the last few years, transition-metal-mediated N-aryl bond formation has become a standard procedure for the introduction of amines into aromatic systems. While N-arylation of simple aromatic halides by simple amines works with many of the described methods in high yield, the reactions m...

Journal: :Molecules 2018
Wafa Redjdal Nada Ibrahim Belkacem Benmerad Mouad Alami Samir Messaoudi

Buchwald-Hartwig-Migita cross-coupling of 1-thiosugars with α- or β-3-iodo-N-glycosylquinolin-2-ones has been accomplished under mild and operationally simple reaction conditions through the use of a Pd-G3 XantPhos palladacycle precatalyst. This new methodology has been successfully applied to a variety of α- or β-mono-, di-, and poly-thiosugar derivatives to efficiently synthesize a series of ...

Journal: :Dalton transactions 2009
Alexandra K de K Lewis Stephen Caddick Oriana Esposito F Geoffrey N Cloke Peter B Hitchcock

The reaction between 2-chlorobenzylamine or 2-chlorobenzylalcohol and Pd(I(t)Bu)(2) (I(t)Bu = 1,3-di-tert-butylimidazol-2-ylidene) in benzene affords the dimeric complexes [Pd(I(t)Bu)(mu-NH{2-CH(2)C(6)H(4)})](2) and [Pd(I(t)Bu)(mu-O{2-CH(2)C(6)H(4)})](2); the latter has been structurally characterised. The syntheses, structural characterisation and reactivity of the Pd-NHC amine complexes [(I(t...

Journal: :Angewandte Chemie International Edition 2017

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