نتایج جستجو برای: aqueous media

تعداد نتایج: 359415  

Journal: :Chemical communications 2007
Lars Ulrik Nordstrøm Robert Madsen

A green and atom-economical method has been developed for the synthesis of piperazines by cyclocondensation of diols and amines in aqueous media in the presence of a catalytic amount of [Cp*IrCl2]2.

Journal: :Chemical communications 2014
Runqing Li Jingquan Liu Luhua Li Hongbin Wang Ziqing Weng Simon K H Lam Aijun Du Ying Chen Colin J Barrow Wenrong Yang

Boron nitride nanotubes were functionalized with microperoxidase-11 in aqueous media, showing improved catalytic performance due to a strong electron coupling between the active centre of microperoxidase-11 and boron nitride nanotubes.

Journal: :Chemical communications 2002
Armando Córdova Wolfgang Notz Carlos F Barbas

Organocatalytic cross-aldol reactions catalyzed by cyclic secondary amines in aqueous media provide a direct route to a variety of aldols including carbohydrate derivatives and may warrant consideration as a prebiotic route to sugars.

Journal: :Chemical communications 2011
Andre Jakoblinnert Radoslav Mladenov Albert Paul Fabrizio Sibilla Ulrich Schwaneberg Marion B Ansorge-Schumacher Pablo Domínguez de María

The asymmetric reduction of ketones is performed by using lyophilized whole cells in neat substrates with defined water activity (a(w)). Ketones and alcohols prone to be unstable in aqueous media can now be converted via biocatalysis.

Journal: :Chemical communications 2015
G Cappelletti V Pifferi S Mostoni L Falciola C Di Bari F Spadavecchia D Meroni E Davoli S Ardizzone

Photocatalytic mineralization of o-toluidine in aqueous media under UV/solar irradiation was achieved by bare and bismuth doped zinc oxide nanoparticles. By adopting different analytical approaches a reaction mechanism is proposed, explaining the differences in photodetoxification performances.

Journal: :Chemical communications 2012
Masa-aki Morikawa Nobuo Kimizuka

β-Nicotinamide adenine dinucleotide (NAD(+)) and its reduced form NADH specifically interact with a cyanine dye in aqueous media, giving distinct spectral and nanostructural characteristics to which molecular information of constituent coenzymes are converted via self-assembly.

Faegheh Ghanbari Masoud Giahi

In this study the application of ZnO nanoparticles to UV photocatalytic degradation of nonionic surfactantTriton X-100 in aqueous media was investigated. The affecting factors on the photodegradation such as TritonX-100 initial concentration, nanocatalyst weight, pH, temperature and other parameters were studied anddescribed in details. The degradation rate was found to be strongly influenced b...

Journal: :Chemical communications 2013
Wei Chen Yanyan Zhang Jian Li Xiaobing Lou Yihua Yu Xueshun Jia Chunju Li

A novel positively charged pillar[6]arene derivative bearing twelve pyridinium moieties has been synthesized. Its efficient complexation behavior towards two anionic naphthalenesulfonate substrates in aqueous media is described.

Journal: :Chemical communications 2010
Julian P Bigi Tamara E Hanna W Hill Harman Alicia Chang Christopher J Chang

A cobalt(ii) complex supported by the new tetradentate polypyridyl ligand PY4 is an electrocatalyst for the reduction of protons to hydrogen and can operate in 50% aqueous media.

Journal: :Chemical communications 2009
Zoltán Dalicsek Ferenc Pollreisz Tibor Soós

A practical, cost-saving tagging approach is developed which takes advantage of the hydrophobicity of trifluoromethyl groups, exemplified by the application and recovery of a CBS precatalyst using tuned aqueous-organic media with minimum 50% water content.

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