Results 21 to 30 of about 3,603 (167)

Exploring matrix effects on photochemistry of organic aerosols [PDF]

open access: yes, 2014
This work explores the effect of the environment on the rate of photolysis of 2,4-dinitrophenol (24-DNP), an important environmental toxin. In stark contrast to the slow photolysis of 24-DNP in an aqueous solution, the photolysis rate is increased by ...
Hinks, Mallory L.   +2 more
core   +2 more sources

Development of a QSPR model for predicting thermal stabilities of nitroaromatic compounds taking into account their decomposition mechanisms [PDF]

open access: yes, 2010
International audienceThe molecular structures of 77 nitroaromatic compounds have been correlated to their thermal stabilities by combining the quantitative structure-property relationship (QSPR) method with density functional theory (DFT). More than 300
Adamo, Carlo   +3 more
core   +3 more sources

Convenient iron-catalyzed reductive aminations without hydrogen for selective synthesis of N-methylamines

open access: yesNature Communications, 2017
N-methylated amines display high biological activity in living organisms. Here, the authors show the convenient synthesis of a wide range of biologically relevant N-methylamines via reduction of nitrobenzenes using a recyclable iron catalyst and ...
Kishore Natte   +3 more
doaj   +1 more source

Pinacol as a new green reducing agent: molybdenum-catalyzed chemoselective reduction of sulfoxides and nitroaromatics [PDF]

open access: yes, 2012
Pinacol is disclosed as a new chemoselective and environmentally benign reducing agent for sulfoxides and nitroaromatics assisted by readily available dichlorodioxomolybdenum(VI) complexes as catalysts.
Arnáiz García, Francisco Javier   +6 more
core   +1 more source

UM MÉTODO EFICIENTE PARA A OBTENÇÃO DE DERIVADOS DE 1-ALQUILAMINO-2,4-DINITROBENZENO E A REDUÇÃO REGIOSSELETIVA PARA A OBTENÇÃO DE DERIVADOS DE 1-ALQUILAMINO-2-AMINO-4-NITROBENZENO

open access: yesQuímica Nova, 2016
Both primary and secondary amines react with 2,4-dinitrochlorobenzene to give derivatives of 1-alkylamino-2,4-dinitrobenzene. These compounds are important intermediates for the synthesis of a diverse range of products.
Cíntia de A. Custódio, Simon J. Garden
doaj   +1 more source

Copper modified TiO2 catalysts: application to nitrobenzenes degradation

open access: yesMATEC Web of Conferences, 2016
Copper doped TiO2 by the method of sol-gel preparation was conducted to stimulate the TiO2 visible light response and enhance the performance of photocatalytic degradation.
Chunyu Shui
doaj   +1 more source

Anion‐Controlled Structural Interconversion of Palladium Cages Enables Separations by Selective Guest Capture and Release

open access: yesAngewandte Chemie, EarlyView.
We report a pair of interconvertible palladium(II) cages assembled from an asymmetric ligand, whose switching is triggered by specific counter‐anions, tetrafluoroborate (BF4−) and bis(trifluoromethanesulfonyl)imide (NTf2−). Their complementary guest preferences enable orthogonal, multi‐cycle catch‐and‐release, exemplified by the selective purification ...
Zhe Li   +2 more
wiley   +2 more sources

The Success Story of Gold-Based Catalysts for Gas- and Liquid-Phase Reactions: A Brief Perspective and Beyond [PDF]

open access: yes, 2019
Gold has long held the fascination of mankind. For millennia it has found use in art, cosmetic metallurgy and architecture; this element is seen as the ultimate statement of prosperity and beauty.
Ivanova, Svetlana   +4 more
core   +1 more source

Chemical Upcycling of Nitrile Butadiene Rubbers to Polyamines and Polyols by Chemoselective Catalytic Hydrogenation

open access: yesAngewandte Chemie, EarlyView.
We demonstrate here the transformation of NBR (Nitrile butadiene rubber) including post‐consumer waste sourced from nitrile gloves and o‐rings into polyamines and polyols via ruthenium catalyzed hydrogenation. ABSTRACT We report here two new approaches for the chemical recycling/upcycling of nitrile butadiene rubber (NBR) to make either polyamines or ...
Alejandra Sophia Lozano Perez   +7 more
wiley   +2 more sources

On the prediction of thermal stability of nitroaromatic compounds using quantum chemical calculations [PDF]

open access: yes, 2009
International audienceThis work presents a new approach to predict thermal stability of nitroaromatic compounds based on quantum chemical calculations and on quantitative structure-property relationship (QSPR) methods.
Adamo, Carlo   +3 more
core   +3 more sources

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