Results 11 to 20 of about 8,006 (250)

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

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

Effect of Bromination on the Quorum Sensing-Inhibiting Properties of Indole-3-Carboxaldehydes in Chromobacterium violaceum AHL System

open access: yesMicrobiology Research, 2021
Quorum sensing (QS) is a form of bacterial communication involved in the production of virulence factors in many species. As a result, inhibition of quorum sensing may be of use in mitigating pathogenesis. The signaling molecule indole is currently being
Chesley A. Kemp   +3 more
doaj   +1 more source

Regioselective Monobromination of Phenols with KBr and ZnAl–BrO3–Layered Double Hydroxides

open access: yesMolecules, 2020
The regioselective mono-bromination of phenols has been successfully developed with KBr and ZnAl−BrO3−−layered double hydroxides (abbreviated as ZnAl−BrO3−−LDHs) as brominating reagents. The para site is much favorable
Ligeng Wang   +3 more
doaj   +1 more source

Regioselectivity of the bromination of 1-oxo-1, 2, 3, 4-tetrahydronaphthalene and 6, 7-dimethyl-1-oxo-1, 2, 3, 4-tetrahydronaphthalene, and thiabiscyclanones synthesis on their basis [PDF]

open access: yesJournal of the Serbian Chemical Society, 2004
On the basis of quantum chemical (PM3 andRHF/6-31G*) study, the regioselectivity of the bromination of 1-oxo-1,2,3,4-tetrahydronaphthalene (1) and 6,7-dimethyl-1-oxo-1,2,3,4-tetrahydronaphthalene (2) at their alicyclic and aromatic fragments was quantum ...
Pankratov Alexei N.   +4 more
doaj   +3 more sources

Direct Vapor-Phase Bromination of Multiwall Carbon Nanotubes

open access: yesJournal of Nanotechnology, 2012
We present the simple procedure of the vapor-phase bromination of multiwall carbon nanotubes (MWNTs) at moderate temperatures. MWNTs with average diameter 9±3 nm were treated with Br2 vapors at 250°C to produce Br-functionalized product.
Ilya Mazov   +6 more
doaj   +1 more source

Electrophilic Bromination in Flow: A Safe and Sustainable Alternative to the Use of Molecular Bromine in Batch

open access: yesMolecules, 2019
Bromination reactions are crucial in today’s chemical industry since the versatility of the formed organobromides makes them suitable building blocks for numerous syntheses.
Reinout Van Kerrebroeck   +4 more
doaj   +1 more source

Insect antifeedant potent 9H-fluorenacylbromides [PDF]

open access: yesQScience Connect, 2013
Background: Attempts to produce greener bromination of 2-acetyl 9H-fluorene with KBr+KBrO3 reagent using fly-ash:H2O catalyst in aqueous media gave 9H-fluorenacylbromides.
G. Thirunarayanan
doaj   +1 more source

Synthesis of 2-Acetyl-1,4-Dimethoxynaphthalene, A Potential Intermediate for Disubstituted Naphtho[2,3,c]pyran-5,10-dione

open access: yesNatural Product Communications, 2014
2-Acetyl-1-hydroxynaphthalene was converted into the title compound in three steps (bromination, substitution and methylation). 1-Methoxynaphthalene on bromination, substitution and acetylation, respectively, also yielded the target compound.
Kimberly Chinea   +2 more
doaj   +1 more source

Bromination of hydrocarbons with CBr4, initiated by light-emitting diode irradiation

open access: yesBeilstein Journal of Organic Chemistry, 2013
The bromination of hydrocarbons with CBr4 as a bromine source, induced by light-emitting diode (LED) irradiation, has been developed. Monobromides were synthesized with high efficiency without the need for any additives, catalysts, heating, or inert ...
Yuta Nishina   +2 more
doaj   +1 more source

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