نتایج جستجو برای: sodium borohydride

تعداد نتایج: 188203  

Journal: :Plant physiology 1959
A S Holt

Sodium borohydride is a well known reducing agent. In methanol at room temperature formyl and keto groups are readily reduced to alcohol groups, while ester and carboxyl groups, carbon-carbon and carbon-nitrogen double bonds are only reduced with difficulty (2, 17). Of the groups present in chlorophyll b the C3 formyl and the C9 keto groups should be amenable to reduction, while the C2 vinyl an...

Journal: :Nanoscale 2011
Humera Jabeen Vimlesh Chandra Sehoon Jung Jung Woo Lee Kwang S Kim Seung Bin Kim

Nanoscale iron particles decorated graphene sheets synthesized via sodium borohydride reduction of graphene oxide, showed enhanced magnetic property, surface area and Cr(vi) adsorption capacity compared to bare iron nanoparticles.

2005
Yu-Qing Cao Zhi Dai Bao-Hua Chen Rui Liu

Aldehydes, ketones and imines were readily reduced by sodium borohydride, with the participation of a small amount of water, in good to excellent yields using PEG400 as catalyst in the absence of organic solvents.  2005 Society of Chemical Industry

Journal: :Chemical communications 2013
Suresh Sarkar Amit K Guria Narayan Pradhan

Doped and undoped ZnS semiconductor nanocrystals having different recombination pathways are explored to study the charge transfer reaction between the nanocrystals and the 4-nitrophenol/sodium borohydride redox couple.

Journal: :Chemical communications 2014
Christophe Deraedt Lionel Salmon Sylvain Gatard Roberto Ciganda Ricardo Hernandez Jaime Ruiz Didier Astruc

Long-term stable 3 nm gold nanoparticles are prepared by a simple reaction between HAuCl4 and sodium borohydride in water under ambient conditions which very efficiently catalyze 4-nitrophenol reduction to 4-nitroaniline.

Journal: :Chemical & pharmaceutical bulletin 2002
Shive Murat Singh Chauhan Srinivas Appan Kandadai Anil Kumar

The biomimetic reduction of anti-inflammatory drug, nimesulide (1) with sodium borohydride catalyzed by 5,10,15,20-tetraarylporphyrinatoiron(III) chlorides [TAPFe(III)Cl] has been studied in organic solvents under anaerobic and aerobic conditions.

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

iron oxide (fe2o3) nanoparticles were synthesized by a simple approach using sodium borohydride (nabh4) and iron chloride hexahydrate (fecl3.6h2o). their physicochemical properties were characterized by high resolution transmission electron microscopy (hrtem), scanning electron microscopy (sem), x-ray diffraction (xrd) and electron dispersive spectroscopy (eds). xrd pattern showed that the iron...

Journal: :The Journal of Automatic Chemistry 1989
Ragnar Bye

The use of hydride generation is often useful in environmental analysis. The normal acid sodium tetrahydroborate reaction provides exceptional sensitivity with continuous flow hydride generators. In some situations there are interferences which will mask the sensitivity. An alternative chemistry system is described here and is shown to offer similar sensitivity to that normally used. A commerci...

Journal: :journal of physical & theoretical chemistry 2010
s. sedaghat m haji ahmad hashemi m. yari a. nouri

polyaniline and polyamide (nylon 6,6) nanocomposites with silva were prepared by in-situ oxidativepolymerization of aniline monomers in the presence of ag salt nano particles of silver (nps) were symthesieedby controlled reduction of ag+ ions kith sodium borohydride at room temperature. nylon 6,6 wax loaded withag nanoparfieles by erdrapment of ag+ ions into the polymer network, followed by red...

Journal: :ChemistrySelect 2022

The reductive amination of aromatic aldehydes and amines, performed in the Brønsted acidic ionic liquid [Et3NH][HSO4], using sodium borohydride as a reducing agent is reported. In this protocol, plays crucial role efficiently converting to amines excellent yields, without formation side products. presence imine was generated situ from reaction between underwent smooth reduction with borohydride...

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