نتایج جستجو برای: organic product

تعداد نتایج: 471450  

Journal: :Organic & biomolecular chemistry 2011
Masaharu Ueno Taku Kitanosono Masaru Sakai Shū Kobayashi

Asymmetric Michael reactions of thiols with enones were catalyzed by a Sc(OTf)(3)-chiral bipyridine complex at room temperature in water without using any organic solvents, to afford the desired sulfides in high yields with high enantioselectivities.

Journal: :Chemical communications 2011
Jianling Zhang Jianshen Li Yueju Zhao Buxing Han Minqiang Hou Guanying Yang

CO(2) can be used to separate surfactant and organic solvent completely in various surfactant/solvent solutions without contaminating the surfactants and solvents. We believe that the simple, efficient, and greener method has wide applications.

2013
Christina Rest María José Mayoral Gustavo Fernández

Self-organization and self-sorting processes are responsible for the regulation and control of the vast majority of biological processes that eventually sustain life on our planet. Attempts to unveil the complexity of these systems have been devoted to the investigation of the binding processes between artificial molecules, complexes or aggregates within multicomponent mixtures, which has facil...

Journal: :Chemical communications 2006
Xue-Qing Li Vladimir Stepanenko Zhijian Chen Paulette Prins Laurens D A Siebbeles Frank Würthner

A new n-type semiconducting perylene bisimide dye has been synthesized that gelates a broad variety of organic solvents to afford well-defined nano- and mesoscopic helical fibers and bundles.

Journal: :Environmental Health Perspectives 1998
J Sherman B Chin P D Huibers R Garcia-Valls T A Hatton

The implementation of the Montreal Protocol, the Clean Air Act, and the Pollution Prevention Act of 1990 has resulted in increased awareness of organic solvent use in chemical processing. The advances made in the search to find "green" replacements for traditional solvents are reviewed, with reference to solvent alternatives for cleaning, coatings, and chemical reaction and separation processes...

Journal: :Chemical communications 2006
Juta Kobayashi Yuichiro Mori Shū Kobayashi

A novel immobilization of an enzyme with a hydrophilic polymer support in organic solvents has been developed utilizing the "polymer-incarcerated (PI) method", which has been used to immobilize metal catalysts; the kinetic resolution of secondary alcohols was found to proceed more smoothly using immobilized lipases (CALB) than free lipases.

Journal: :Chemical communications 2014
Shan Wang Haolong Li Liying Zhang Bao Li Xiao Cao Guohua Zhang Shilin Zhang Lixin Wu

Surfactant-encapsulated polyoxometalate complexes are used as cluster suprasurfactants to transfer reduced graphene oxide (RGO) nanosheets from water to low polar organic solvents, which realizes the single-layer dispersion and the cluster-functionalization of RGO in one step.

Journal: :Nanoscale 2012
Matt W England Elizabeth M Lambert Mei Li Lyudmila Turyanska Avinash J Patil Stephen Mann

A template-directed method for the synthesis and organization of partially oxidized polypyrrole (PPy) nanoscale arrays within the solvent channels of glutaraldehyde-cross-linked lysozyme single crystals is presented. Macroscopic single crystals of the periodically arranged protein-polymer superstructure are electrically conductive, insoluble in water and organic solvents, and display increased ...

Journal: :Dalton transactions 2014
Jörg Saßmannshausen

The recently reported cationic titanocene complex [Cp2TiMe(OH2)](+) was subjected to detailed computational studies using density functional theory (DFT). The calculated NMR spectra revealed the importance of including the anion and the solvent (CD2Cl2) in order to calculate spectra which were in good agreement with the experimental data. Specifically, two organic solvent molecules were require...

Journal: :Chemical communications 2011
Ningzhong Bao Xinmin Qiu Yu-Hsiang A Wang Ziyou Zhou Xiaohua Lu Craig A Grimes Arunava Gupta

Monodisperse CuInS(2) nanocrystals are produced by injecting mixed metal-oleate precursors into hot organic solvents containing the dissolved sulphur sources. A better understanding of the formation mechanism of CuInS(2) has enabled us to tailor anisotropic shapes in the form of triangular-pyramid, circular cone, and bullet-like rods with tunable crystal phases by varying the synthetic conditions.

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