نتایج جستجو برای: pot synthesis

تعداد نتایج: 417578  

Journal: :Nanoscale 2016
L Meziane C Salzemann C Aubert H Gérard C Petit M Petit

Herein we describe the first synthesis of pure mono-disperse spherical hcp-nanocrystals ferromagnetic at room temperature. Our strategy, based on the simple combination of oleylamine and ClCo(PPh3)3, allows the one-pot synthesis of size-controlled hcp-nanocrystals. The size and shape of the nanocrystals can be tuned by varying the reaction time or the concentration.

Journal: :Organic letters 2008
George A Kraus Haitao Guo

The reaction of (2-aminobenzyl) triphenylphosphonium bromide with aromatic aldehydes or alpha,beta-unsaturated aldehydes under microwave-assisted conditions constitutes a new synthesis of 2-substituted indoles in high yields (81-97%) in a one-pot reaction. The adduct from indole-4-carboxaldehyde was an advanced intermediate in the synthesis of arcyriacyanin A.

Journal: :Chemical communications 2011
Julianne Caton-Williams Lina Lin Matthew Smith Zhen Huang

By generating a selective phosphitylating reagent in situ, nucleoside 5'-triphosphates can be conveniently synthesized in one pot. This novel strategy without nucleoside protection has been developed to largely simplify synthesis of the nucleoside triphosphates. This demonstrated principle can be applied to the 5'-triphosphate synthesis of both native and modified nucleosides.

Journal: :Chemical communications 2013
Stefanie Papst Soshan Cheong Moritz J Banholzer Margaret A Brimble David E Williams Richard D Tilley

Herein we report the rational design of new phosphopeptides for control of nucleation, growth and aggregation of water-soluble, superparamagnetic iron-iron oxide core-shell nanoparticles. The use of the designed peptides enables a one-pot synthesis that avoids utilizing unstable or toxic iron precursors, organic solvents, and the need for exchange of capping agent after synthesis of the NPs.

Journal: :Chemical communications 2006
Panumart Thongyoo Edward W Tate Robin J Leatherbarrow

The first total synthesis of MCoTI-II, a cysteine knot microprotein and potent trypsin inhibitor, is described; a synthetic strategy has been developed that combines efficient backbone construction via optimised solid phase peptide synthesis with one-pot 'thia-zip' native chemical ligation and refolding to yield the natural product.

Journal: :Molecules 2009
Norma Robledo Jaime Escalante René Arzuffi

A synthesis of 2-methyl-6-vinylpyrazine was carried out by way of a 'one pot' reaction. In order to establish the efficiency of this synthesis the extraction of the volatiles released by male papaya fruit flies was performed by SPME (solid phase micro-extraction). The compound was separated and identified using GC/MSD (gas chromatography/mass spectrometry detector).

Journal: :Organic & biomolecular chemistry 2013
Yi-ning Xuan Han-Sen Lin Ming Yan

Highly enantioselective synthesis of α,β-epoxy esters was achieved via one-pot organocatalytic epoxidation and consequent oxidative esterification. Excellent enantioselectivities (up to 99% ee) and good yields were obtained for a variety of α,β-epoxy esters. The method was readily scaled. Furthermore the product was applied towards the synthesis of (-)-clausenamide with excellent enantioselecti...

Journal: :Beilstein Journal of Organic Chemistry 2009
Mukund G Kulkarni Sanjay W Chavhan Mahadev P Shinde Dnyaneshwar D Gaikwad Ajit S Borhade Attrimuni P Dhondge Yunnus B Shaikh Vijay B Ningdale Mayur P Desai Deekshaputra R Birhade

A zeolite-catalyzed, simple, one-pot, solvent-free, cost effective, and environmentally benign process for the synthesis of dihydropyrimidones is described. This reaction is scaleable to multigram scale and the catalyst is recyclable. This methodology has resulted in an efficient synthesis of monastrol, a potent inhibitor of kinesin Eg5.

Journal: :Chemical communications 2014
Yan He Xinying Zhang Xuesen Fan

A one-pot cascade reaction of 1-arylpenta-3,4-dien-2-ones with activated ketones allowed for an efficient and sustainable synthesis of 2-arylphenols. Moreover, this reaction was also found to be compatible and combinable with Pd-catalyzed C-H activation and carbonylation of the in situ formed 2-aryl phenols, thus resulting in a highly convenient and atom-economic synthesis of dibenzopyranones.

Journal: :Chemical communications 2012
R B Nasir Baig Rajender S Varma

Synthesis of triazole based unnatural amino acids and β-amino triazoles has been described via a stereo and regioselective one-pot multi-component reaction of sulfamidates, sodium azide, and alkynes under MW conditions. The developed method is applicable to a broad substrate scope and has significant potential for the synthesis of unnatural amino acids with a triazole side chain.

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