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1.264 Aktuelle Fachpublikationen zum Thema Addition

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Electrochemical degradation of aspirin using a Ni doped PbO2 electrode

29.03.2015 | Author(s): Yijing Xia , Qizhou Dai , Jianmeng Chen, Journal of Electroanalytical Chemistry, 2015

Publication date: 1 May 2015 Source:Journal of Electroanalytical Chemistry, Volume 744 Author(s): Yijing Xia , Qizhou Dai , Jianmeng Chen The novel nickel modified PbO2 electrodes were successfully prepared via electrodeposition in nitrate solution. The influence of nickel content on the ...

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Influence of ocean acidification on the complexation of iron and copper by organic ligands in estuarine waters

29.03.2015 | Author(s): Martha Gledhill , Eric P. Achterberg , Keqiang Li , Khairul N. Mohamed , Micha J.A. Rijkenberg, Marine Chemistry, 2015

Publication date: Available online 26 March 2015 Source:Marine Chemistry Author(s): Martha Gledhill , Eric P. Achterberg , Keqiang Li , Khairul N. Mohamed , Micha J.A. Rijkenberg The uptake of anthropogenic atmospheric CO2 by the oceans causes a shift in the carbonate chemistry system ...

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Smart tools and orthogonal click-like reactions onto small unilamellar vesicles

29.03.2015 | Author(s): Christophe Salomé , Maria Vittoria Spanedda , Benoit Hilbold , Etienne Berner , Béatrice Heurtault , ..., Chemistry and Physics of Lipids, 2015

Publication date: Available online 27 March 2015 Source:Chemistry and Physics of Lipids Author(s): Christophe Salomé , Maria Vittoria Spanedda , Benoit Hilbold , Etienne Berner , Béatrice Heurtault , Sylvie Fournel , Benoit Frisch , Line Bourel-Bonnet Click-based reactions were ...

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Asymmetric Total Synthesis of Apocynaceae Hydrocarbazole Alkaloids (+)-Deethylibophyllidine and (+)-Limaspermidine

24.03.2015 | Ji-Yuan Du; Chao Zeng; Xiao-Jie Han; Hu Qu; Xian-He Zhao; Xian-Tao An; Chun-An Fan, Journal of the American Chemical Society, 2015

An unprecedented asymmetric catalytic tandem aminolysis/aza-Michael addition reaction of spirocyclic para-dienoneimides has been designed and developed through organocatalytic enantioselective desymmetrization. A unified strategy based on this key tandem methodology has been divergently explored ...

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The electrolytic treatment of synthetic urine using DSA electrodes

22.03.2015 | Author(s): Sondos Dbira , Nasr Bensalah , Pablo Cañizares , Manuel A. Rodrigo , Ahmed Bedoui, Journal of Electroanalytical Chemistry, 2015

Publication date: 1 May 2015 Source:Journal of Electroanalytical Chemistry, Volume 744 Author(s): Sondos Dbira , Nasr Bensalah , Pablo Cañizares , Manuel A. Rodrigo , Ahmed Bedoui In this work, the electrochemical treatment of synthetic urine by anodic oxidation using dimensionally ...

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CBrF3 (Halon-1301): UV absorption spectrum between 210 and 320K, atmospheric lifetime, and ozone depletion potential

22.03.2015 | Author(s): François Bernard , Max R. McGillen , Eric L. Fleming , Charles H. Jackman , James B. Burkholder, Journal of Photochemistry and Photobiology A: Chemistry, 2015

Publication date: Available online 17 March 2015 Source:Journal of Photochemistry and Photobiology A: Chemistry Author(s): François Bernard , Max R. McGillen , Eric L. Fleming , Charles H. Jackman , James B. Burkholder CBrF3 (Halon-1301) is a man-made ozone depleting substance that is ...

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Bis(pyridylimino)isoindolato (BPI) Osmium Complexes: Structural Chemistry and Reactivity

20.03.2015 | Astrid L. Müller; Hubert Wadepohl; Lutz H. Gade, Organometallics, 2015

A series of osmium complexes with monoanionic, meridionally coordinating 1,3-bis(2-pyridylimino)isoindolates (BPI) as spectator ligands has been synthesized. Reaction of the dichlorido metal precursor [OsCl2(PPh3)3] with the lithiated BPI ligand transfer reagent gave the chlorido complex ...

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Ortho‐Quinone Methides as Reactive Intermediates in Asymmetric Brønsted Acid Catalyzed Cycloadditions with Unactivated Alkenes by Exclusive Activation of the Electrophile

17.03.2015 | Chien‐Chi Hsiao, Sadiya Raja, Hsuan‐Hung Liao, Iuliana Atodiresei, Magnus Rueping, Angewandte Chemie International Edition, 2015

Abstract An efficient method for the highly enantioselective synthesis of chiral chromanes bearing multiple stereogenic centers was developed. A chiral BINOL‐based N‐triflylphosphoramide proved to be an effective catalyst for the in situ generation of ortho‐quinone methides (o‐QMs) and their ...

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Determination of low concentrations of iron, arsenic, selenium, cadmium, and other trace elements in natural samples using an octopole collision/reaction cell equipped quadrupole‐inductively coupled plasma mass spectrometer

17.03.2015 | Angela R. Dial, Sambuddha Misra, William M. Landing, Rapid Communications in Mass Spectrometry, 2015

Rationale Accurate determination of trace metals has many applications in environmental and life sciences, such as constraining the cycling of essential micronutrients in biological production and employing trace metals as tracers for anthropogenic pollution. Analysis of elements such as Fe, ...

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Voltammetric response of [Co(phen)3]3+ and gold nanoparticles/multi-walled carbon nanotubes to two C-6 substituted purines

15.03.2015 | Author(s): Zhihong Yang , Xueping Cai , Baoyi Lu , Xuan Xu , Hong Li, Journal of Electroanalytical Chemistry, 2015

Publication date: 15 April 2015 Source:Journal of Electroanalytical Chemistry, Volume 743 Author(s): Zhihong Yang , Xueping Cai , Baoyi Lu , Xuan Xu , Hong Li Voltammetric response of [Co(phen)3]3+ (phen=1,10-phenanthroline) and gold nanoparticles/multi-walled carbon nanotubes ...

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