Results 11 to 20 of about 46,804 (306)

Bromine-Promoted One-Pot Furo[b]annulation and α‑C(sp2)‑Thiomethylation Cascade of (E)‑3-Styrylquinoxalin-2(1H)‑ones with Dimethyl Sulfoxide

open access: yes, 2022
A new process has been developed for the bromine-promoted sequential (sp2)C = (sp2)C bond functionalization of (E)-3-styrylquinoxalin-2(1H)-ones and furo[b]annulation via the 5-exo-cyclization in dimethyl sulfoxide (DMSO). The reaction represents a novel
Aidar T. Gubaidullin (1645159)   +7 more
core   +4 more sources

Signatures of the Bromine Atom and Open-Shell Spin-Coupling in the X-ray Spectrum of Bromobenzene Cation [PDF]

open access: yes, 2022
Table-top x-ray spectroscopy measurements at the carbon K-edge complemented by ab initio calculations are used to investigate the influence of the bromine atom on the carbon core-valence transitions in bromobenzene cation (BrBz+).
Zheyue , Yang   +8 more
core   +2 more sources

Selective Bromination of Acetophenone Derivatives with Bromine in Methanol. [PDF]

open access: yesChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Jonalee Goswami, Goswami, Amrit
openaire   +2 more sources

Determination of Bromine in Brine by Wavelength Dispersive X-ray Fluorescence Spectrometry with Film Adsorption Pretreatment

open access: yesYankuang ceshi, 2015
Bromine exists mainly as ions in bromide brine and halide sulfate brine in the hydrosphere of the crust. Powder carrier pellet method is commonly used in analyzing bromine in brine by Wavelength Dispersive X-ray Fluorescence Spectrometry (WDXRF). However,
CHEN Jing-wei   +5 more
doaj   +1 more source

Gas distributor for ultra-large air blow-out bromine extraction plant [PDF]

open access: yesE3S Web of Conferences, 2023
The initial distribution of gas and liquid is one of the key factors that determine the operation efficiency of packed towers. The development of a gas distributor for ultra-large air blow-out bromine extraction plant can improve operation efficiency ...
Chai Shujing   +6 more
doaj   +1 more source

Regioselective bromination: Synthesis of brominated methoxyquinolines

open access: yesTetrahedron, 2017
Abstract Simple synthetic methods are described for the synthesis of valuable polyfunctional brominated methoxyquinolines 10–13, 20–21, and 24–25. Three regioselective routes are described for convenient preparation of brominated methoxyquinolines at the C-2, C-3, and C-5 positions with consecutive reaction steps under mild reaction conditions using ...
Cakmak, Osman, Okten, Salih
openaire   +4 more sources

(C5H12N)Cu2Br3: A Piperidinium Copper(I) Bromide with [Cu2Br3]− Ladders

open access: yesCrystals, 2012
Piperidinium copper(I) bromide, (C5H12N)Cu2Br3, was obtained from a solution of CuBr2, piperidine, and HBr in ethanol. At 60 °C ethanol slowly reduces copper(II) to copper(I).
Karl W. Krämer   +3 more
doaj   +1 more source

In Situ Measurement of Localized Current Distribution in H2-Br2 Redox Flow Batteries

open access: yesEnergies, 2021
Hydrogen bromine redox flow batteries (RFB) are considered to be one of the most promising storage alternatives, as this technology offers both high energy and high-power density.
Brenda Berenice Martinez Cantu   +4 more
doaj   +1 more source

Short-lived brominated hydrocarbons – observations in the source regions and the tropical tropopause layer [PDF]

open access: yes, 2011
We conducted measurements of the five important short-lived organic bromine species in the marine boundary layer (MBL). Measurements were made in the Northern Hemisphere mid-latitudes (Sylt Island, North Sea) in June 2009 and in the tropical Western ...
E. Atlas   +18 more
core   +2 more sources

Electrophilic Activation of Molecular Bromine Mediated by I(III) [PDF]

open access: yes, 2023
In pursuit of a genuine Bromo-λ3-iodane, it has been found that the combination of Br2 and electron deficient λ3-iodanes can result in delivery of both bromine atoms from Br2 to a range of aryl substrates, some highly deactivated.
Lachlan, Sharp-Bucknall   +3 more
core   +2 more sources

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