نتایج جستجو برای: organo catalyst

تعداد نتایج: 45742  

Journal: :Dalton transactions 2015
Rao Naumaan Nasim Khan Chunlin Lv Jin Zhang Jian Hao Yongge Wei

An efficient protocol for post-functionalization of organo-imido polyoxometalates is developed via creating a remote tertiary “N” atom over the surface of organo-imido hexamolybdates and subsequently post-functionalizing it with the help of allyl or alkyl halides to afford stoichiometric, “in situ” crystalline products at moderate temperatures. The parent organo-imido product 2 and post-functio...

Journal: :Chemcatchem 2023

RuNPs stabilised by amino-decorated imidazolium-based polymer immobilized ionic liquids catalyse the dimethylamine borane mediated reduction of quinolines to 1,2-dihydroquinoline (DHQ) and 1,2,3,4-tetrahydroquinoline (THQ). Partial 3-substituted corresponding was achieved with 100% selectivity in toluene under mild conditions. This is first report selective partial 1,2-dihydroquinolines a heter...

Journal: :Soft matter 2015
L V Angelova M Leskes B H Berrie R G Weiss

Viscoelastic, gel-like, polymeric dispersions (HVPDs) can be prepared by crosslinking polyols with borax or boric acid in water under alkaline conditions. Rheologically similar HVPDs have been prepared in organic liquids containing no water or hydroxylic groups through crosslinking partially or fully hydrolysed poly(vinyl acetate)s with trimethyl borate, boric acid, or borax. The organo-HVPDs a...

Journal: :Immunology 2009
Claire Crola Da Silva Nathalie Lamerant-Fayel Maria Paprocka Michèle Mitterrand David Gosset Danuta Dus Claudine Kieda

An original model of organo-specific, immortalized and stabilized endothelial cell lines was used to delineate the part played by some chemokines (CCL21, CX3CL1, CCL5 and CXCL12) and their receptors in endothelium organo-specificity. Chemokine receptor expression and chemokine presentation were investigated on organo-specific human endothelial cell lines. Although the chemokines showed distinct...

Journal: :Organic & biomolecular chemistry 2014
Chi-How Peng Tsung-Yao Yang Yaguang Zhao Xuefeng Fu

Mediation of reversible deactivation radical polymerization (RDRP) by cobalt(II) complexes (CMRP) is the most highly developed subcategory of organometallic mediated RDRP (OMRP). Attention was paid to CMRP for its unusual high efficiency observed for the control of acrylate and vinyl acetate polymerization that produced homo- and block copolymers with narrow molecular weight distribution and a ...

Journal: :Journal of the American Chemical Society 2008
Thomas H Graham Casey M Jones Nathan T Jui David W C MacMillan

A critical objective for the continued advancement of the field of asymmetric catalysis is the design and implementation of novel activation modes that allow the invention of unprecedented transformations. Recently, our laboratory introduced a new mode of organocatalytic activation, termed (singly occupied molecular orbital) SOMO catalysis, that is founded upon the transient production of a 3π-...

Journal: :Anais da Academia Brasileira de Ciencias 2015
Francisco A Morais Luciano C Gatiboni

The aim of this study was to evaluate P availability, P and C contained in the microbial biomass, and enzymatic activity (acid phosphatases and β-glucosidases) in a Nitisol with the application of mineral and organo-mineral fertilizers. The experiment was performed in a protected environment with control over air temperature and soil moisture. The experimental design was organized in a "5 x 4" ...

2016
Nadia BOUKHALFA Nassima DJEBRI Mokhtar BOUTAHALA

Diclofenac sodium (DS) is considered as priority anti-inflammatory pollutant because of its presence in water. In this paper, we addressed the issue of using organo-K10 montmorillonite as adsorbent of DS to reduce its negative effects on the environment. An organo-K10 montmorillonite (MK10-C16) was prepared by intercalating the organic cation cetyltrimethylammonium bromide (C16) in a K10 montmo...

Journal: :Advanced Synthesis & Catalysis 2022

Abstract. Replacement of organic solvents, in particular chlorinated, aromatic, and polar aprotic ones is an emerging issue that can find a solution the development catalytic reactions water. Nature performs multitude chemical transformations water under mild conditions mediated by enzymes. In nanoconfinement effects enzymes ensure high activity impressive stereoselectivities. Micellar catalysi...

The influence of carbon content in three organic dyes, blue21, yellow20, and green40 on the adsorption behavior using organo-bagasse as a biosorbent was investigated. The organo-bagasse was prepared by adsolubilisation using tetradecyltrimethyl ammonium bromide as a chemical modifying agent. The precursor and organo-bagasse were characterized by elemental analysis, Brunauer-Emmett-Teller method...

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