نتایج جستجو برای: hydrogen halides

تعداد نتایج: 149065  

Journal: :Journal of Research of the National Bureau of Standards Section A: Physics and Chemistry 1968

Journal: :Journal of Organic Chemistry 2021

Secondary benzylic alcohols and diarylmethanols are common structural motifs of biologically active medicinally relevant compounds. Here we report their enantioselective synthesis by ?-arylation primary aliphatic under sequential catalysis integrating a Ru-catalyzed hydrogen transfer oxidation nucleophilic addition. The method can be applied to various aryl nucleophiles tolerating range functio...

2015
Daniel J. Weix

Cross-electrophile coupling, the cross-coupling of two different electrophiles, avoids the need for preformed carbon nucleophiles, but development of general methods has lagged behind cross-coupling and C-H functionalization. A central reason for this slow development is the challenge of selectively coupling two substrates that are alike in reactivity. This Account describes the discovery of ge...

2013
V. Busico A. Scopa

für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

Journal: :Organic & biomolecular chemistry 2007
Carolyn S Reid Yuhua Zhang Chao-Jun Li

An efficient method was developed to allylate aldehydes using an aqueous indium-mediated allylation reaction with fluorous-tagged allyl halides, and to directly purify the products by fluorous solid phase extraction (F-SPE).

2004
Chi-Young Lee

Halides were used as the precursors to prepare various kinds of materials by stripped off the halogens. Metals, metal silicides and carbon related materials could be prepared by using metal halides, silicon halides and carbon halides as the precursors. Some active metals and active meta stable species were used as stripping reagents.

2013
Masahisa Kakiuchi

The D/H ratios of hydrogen gas in equilibrium with aqueous alkali halide solutions were determined at 25 °C, using a hydrophobic platinum catalyst. The hydrogen isotope effect between the solution and pure water changes linearly with the molality of the solution at low concentrations, but deviates from this linearity at higher concentration for all alkali halide solutions. The magnitude of the ...

Novel N-amino benzylthiolates were synthesized via multicomponent reaction of malononitrile, isothiocyanates and benzyl halides under conventional and solvent-free conditions. Various electron-donating and -withdrawing substitutes within both isothiocyanates and benzyl halides were used to demonstrate the efficiency of new methodology. A broad spectrum of antibacterial and antifungal activities...

Journal: :علوم 0

the complex formation reaction between iodine with tetrabutylammonium halides (tbax) has been studied spectrophotometrically in chloroform solution at 25ºc. various aspects of the spectra of iodine in the presence of various concentration of different tetrabutylammonium halides have been discussed in terms of electronic specifications of iodine and halides. in the case of tetrabutylammonium iod...

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