Results 21 to 30 of about 113,231 (329)

Efficient Synthesis of Isoquinoline Derivatives through Sequential Cyclization–Deoxygenation Reaction of 2-Alkynylbenzaldoximes

open access: yesSynOpen, 2022
We describe a novel, simple, robust, and efficient cyclization/deoxygenation approach for the synthesis of functionalized isoquinoline derivatives. Over the course of continued studies on o-alkynylbenzaldoxime cyclization reactions, the formation of ...
Mojtaba Ayoubi   +5 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

Distributions of brominated organic compounds in the troposphere and lower stratosphere [PDF]

open access: yes, 1999
A comprehensive suite of brominated organic compounds was measured from whole air samples collected during the 1996 NASA Stratospheric Tracers of Atmospheric Transport aircraft campaign and the 1996 NASA Global Tropospheric Experiment Pacific Exploratory
Atlas, EL   +7 more
core   +1 more source

Polybutadiene Cross-Linked With Various Diols – Effect On Thermal Stability [PDF]

open access: yes, 2000
The relationship between cross-linking and thermal stability as related to polybutadiene is the focus of current research. Cross-linked polybutadienes have been prepared using various diols as the cross-linking agent.
McKinney, Michael A.   +2 more
core   +2 more sources

A High-Performance Aqueous Zinc-Bromine Static Battery

open access: yesiScience, 2020
Summary: The highly reversible zinc-bromine redox couple has been successfully applied in the zinc-bromine flow batteries; however, non-electroactive pump/pipe/reservoir parts and ion-selective membranes are essential to suppress the bromine diffusion ...
Lujie Gao   +6 more
doaj   +1 more source

Non-catalytic bromination of benzene: a combined computational and experimental study [PDF]

open access: yes, 2015
The non-catalytic bromination of benzene is shown experimentally to require high 5-14M concentrations of bromine in order to proceed at ambient temperatures to form predominantly bromobenzene, along with detectable (The non-catalytic bromination of ...
Genaev, A   +4 more
core   +2 more sources

A new interpretation of total column BrO during Arctic spring [PDF]

open access: yes, 2010
Emission of bromine from sea-salt aerosol, frost flowers, ice leads, and snow results in the nearly complete removal of surface ozone during Arctic spring.
Atlas, E L   +42 more
core   +2 more sources

Oxidation of Florfenicol and Oxolinic Acid in Seawater by Ozonation

open access: yesApplied Sciences, 2020
There has been an increase in the use of antibiotics by the aquaculture industry in marine aquaculture for the prevention of diseases in fish. Antibiotics in the water discharged into the sea without treatment can cause disturbances to the marine ...
Homin Kye   +6 more
doaj   +1 more source

Time-dependent 3D simulations of tropospheric ozone depletion events in the Arctic spring using the Weather Research and Forecasting model coupled with Chemistry (WRF-Chem) [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
Tropospheric bromine release and ozone depletion events (ODEs) as they commonly occur in the Arctic spring are studied using a regional model based on the open-source software package Weather Research and Forecasting model coupled with Chemistry (WRF ...
M. Herrmann   +9 more
doaj   +1 more source

Phase-vanishing halolactonization of neat substrates

open access: yesBeilstein Journal of Organic Chemistry, 2008
Phase-vanishing reactions are triphasic reactions which involve a reagent, a liquid perfluoroalkane as a phase screen and a substrate. The perfluoroalkane does not dissolve any of the reactants and is used to separate them.
Nicole Windmon, Veljko Dragojlovic
doaj   +1 more source

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