Results 21 to 30 of about 12,935 (248)

Stereoselective dibromination of diphenylphosphorylallenes with N-bromosuccinimide under mild conditions

Journal of Saudi Chemical Society, 2018
A highly stereoselective dibromination of diphenylphosphorylallenes using N-bromosuccinimide (NBS) as bromine reagent is developed, wherein a variety of 2-bromo-substituted allyl bromides were obtained in good to excellent yields under mild reaction ...
Qiang Wang, Li-Heng Ruan, Jing Sun, Ming-Dong Zhou   +3 more
doaj   +1 more source

Benzylethyldimethylammonium bromide [PDF]

Acta Crystallographica Section E Structure Reports Online, 2008
The crystal structure of the title compound, C(11)H(18)N(+)·Br(-), has been determined as part of an ongoing study of the influence of the alkyl chain length on amphiphilic activity of quaternary ammonium salts. The title salt forms a three-dimensional network of ionic contacts through weak C-H⋯Br hydrogen bonds, with donor-acceptor distances in the ...
Hodorowicz, Maciej, Stadnicka, Katarzyna
openaire   +3 more sources

Electroanalytical Sensing of Bromides Using Radiolytically Synthesized Silver Nanoparticle Electrocatalysts

Journal of Analytical Methods in Chemistry, 2017
Monitoring bromides (Br−) is of crucial importance since bromates, potential human carcinogens, are formed during ozonation of water containing bromides in concentrations >100 μg L−1.
Jadranka Milikić, Ivan Stoševski, Jelena Krstić, Zorica Kačarević-Popović, Šćepan Miljanić, Biljana Šljukić   +5 more
doaj   +1 more source

Synthesis and Antimicrobial Activity of Carboxylate Phosphabetaines Derivatives with Alkyl Chains of Various Lengths

Journal of Chemistry, 2013
The purpose of the present study was to investigate the antibacterial activity of fifteen novel nanosized alkyl esters of carboxylate phosphabetaine: β-(carboxyalkyl)ethyltriphenylphosphonium bromides 4–8, β-(carboxyalkyl)-β ...
Irina V. Galkina, Yuliya V. Bakhtiyarova, Marina P. Shulaeva, Oskar K. Pozdeev, Svetlana N. Egorova, Rafael A. Cherkasov, Vladimir I. Galkin   +6 more
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Practical synthesis of aryl-2-methyl-3-butyn-2-ols from aryl bromides via conventional and decarboxylative copper-free Sonogashira coupling reactions

Beilstein Journal of Organic Chemistry, 2014
Two efficient protocols for the palladium-catalyzed synthesis of aryl-2-methyl-3-butyn-2-ols from aryl bromides in the absence of copper were developed.
Andrea Caporale, Stefano Tartaggia, Andrea Castellin, Ottorino De Lucchi   +3 more
doaj   +1 more source

Carbene-catalysed reductive coupling of nitrobenzyl bromides and activated ketones or imines via single-electron-transfer process

Nature Communications, 2016
Benzyl bromides can be activated for radical reactions by photocatalytic single electron transfer. Here the authors show thatN-heterocyclic carbenes are also capable of activating this pathway for nitrobenzyl bromides, and that the radical intermediates ...
Bao-Sheng Li, Yuhuang Wang, Rupert S. J. Proctor, Yuexia Zhang, Richard D. Webster, Song Yang, Baoan Song, Yonggui Robin Chi   +7 more
doaj   +1 more source

Reinvestigation of 2,2,6,6-tetramethylpiperidine-1-oxoammonium mono- and tribromide: From old compounds to new findings

Results in Chemistry, 2021
The preparation and characteristics of 2,2,6,6-tetramethylpiperidine-1-oxoammonium bromides, old compounds with promising perspectives for use in modern energy storage devices, were reinvestigated.
Irina Y. Ponedel'kina, Elvira A. Khaybrakhmanova, Tatyana V. Tyumkina   +2 more
doaj   +1 more source

Iron-Catalyzed Cross-Coupling of Bis-(aryl)manganese Nucleophiles with Alkenyl Halides: Optimization and Mechanistic Investigations

Molecules, 2020
Various substituted bis-(aryl)manganese species were prepared from aryl bromides by one-pot insertion of magnesium turnings in the presence of LiCl and in situ trans-metalation with MnCl2 in THF at −5 °C within 2 h.
Lidie Rousseau, Alexandre Desaintjean, Paul Knochel, Guillaume Lefèvre   +3 more
doaj   +1 more source

Paired electrolysis-enabled nickel-catalyzed enantioselective reductive cross-coupling between α-chloroesters and aryl bromides

Nature Communications, 2022
Precise matching of reaction rate and electric potential of electrodes in paired electrolysis is challenging. Here, the authors develop paired-electrolysis-enabled nickel-catalyzed enantioselective reductive cross-coupling of α-chloroesters and aryl ...
Dong Liu, Zhao-Ran Liu, Zhen-Hua Wang, Cong Ma, Simon Herbert, Hartmut Schirok, Tian-Sheng Mei   +6 more
doaj   +1 more source

Synthesis of benzocycloalkene derivatives via Pd-catalyzed one-pot two-step reactions of benzocyclic ketones, tosylhydrazide with aryl bromides

Journal of Saudi Chemical Society, 2018
A new method for the synthesis of benzocycloalkene derivatives is described, through the palladium-catalyzed one-pot two-step reactions of benzocyclic ketones, tosylhydrazide with aryl bromides.
Zhenze Sun, Ping Liu, Bin Dai
doaj   +1 more source