نتایج جستجو برای: thioether

تعداد نتایج: 956  

Journal: :Dalton transactions 2012
Alessia Famengo Dalice Pinero Olivier Jeannin Thierry Guizouarn Marc Fourmigué

The secondary coordination ability of a paramagnetic nickel dithiolene complex, bearing an ether coordinating function within a nine-membered flexible ring, has been demonstrated in its [NiCl(DMF)(2)](+) complex, through coordination by both ether and thioether functions, allowing for a ferromagnetic interaction between both paramagnetic entities.

Journal: :Dalton transactions 2009
Javier Iglesias-Sigüenza Abel Ros Elena Díez Antonio Magriz Arcadio Vázquez Eleuterio Alvarez Rosario Fernández José M Lassaletta

Neutral, C2-symmetric S/C/S ligands based on N-heterocyclic carbenes and thioether functionalities were incorporated into transition metal complexes characterised by two direct metal-stereogenic sulfur bonds. This new ligand design was applied to 1,3-dipolar cycloadditions as the first example of the use silver of carbenes in asymmetric catalysis.

Journal: :Chemical communications 2012
Andrew B Mahon Paramjit S Arora

Appropriately-placed hydrogen bond surrogates have been demonstrated to efficiently nucleate helical conformations. Herein we describe an efficient method for the synthesis of thioether-based hydrogen bond surrogate (teHBS) helices. A teHBS helix is shown to adopt a stable conformation and target its cognate protein receptor with high affinity.

Journal: :Organic Letters 2021

A new access to artemisinin is reported based on a selective photochemical hydrothiolation of amorphadiene, waste product the industrial semisynthetic route. This study highlights discovery two distinctive activation pathways under solvent-free conditions or using photocatalyst promoting H-abstraction. Subsequently, chemoselective oxidation resulting photochemically generated thioether, followe...

2005
Michael J. Prushan Anthony W. Addison Raymond J. Butcher Laurence K. Thompson

Two dinuclear copper(II) thioether-oxime complexes ([Cu(DtdoH)]2(ClO4)2 and [Cu(DtudH)]2(ClO4)2 Æ 2CH3OH) have been synthesized. [Cu(DtdoH)]2(ClO4)2 reacted with excess BF3 Æ OEt2 to yield [Cu(Thyclops)]ClO4, a BF2 þ-macrocyclized di-oxime. [Cu(DtdoH)]2(ClO4)2 and [Cu(DtudH)]2(ClO4)2 Æ 2CH3OH are the first representatives of copper(II) thioether oximes which exhibit the classical out-of-plane o...

Journal: :British journal of industrial medicine 1986
J K Stock B G Priestly

Petroleum is a complex mixture of lipophilic chemicals, some of which are likely to be substrates for the microsomal mixed function oxygenases. Petroleum retailers, by virtue of their occupational exposure potential, are a group likely to receive relatively heavy exposure to petroleum products in comparison with the general public. Urinary thioether output may provide a simple, non-invasive tec...

Journal: :Drug metabolism and disposition: the biological fate of chemicals 2004
Khawja A Usmani Edward D Karoly Ernest Hodgson Randy L Rose

Cytochrome P450 (P450) and flavin-containing monooxygenase (FMO) enzymes are major catalysts involved in the metabolism of xenobiotics. The sulfoxidation of the thioether pesticides, phorate, disulfoton, sulprofos, and methiocarb, was investigated. Using pooled human liver microsomes (HLMs), thioether compounds displayed similar affinities; however, phorate and disulfoton displayed higher intri...

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