Results 61 to 70 of about 3,662 (206)

H2O2 Activation and Alkane Oxidation by Copper Complexes With R‐dpa N3‐Tridentate Ligands: The Complex‐Based Dicopper Active Species as a Key Feature in the Efficient Alkane Oxidation

Chemistry – A European Journal, EarlyView.
Two reaction pathways, Paths 1 and 2, are involved in H2O2 activation by Cu complexes with N3‐tridentate ligands, depending on the ease of bridging structure formation. In Path 1, hydroxy radical (HO•) is formed from a hydroperoxo Cu(II) intermediate. In Path 2, a relevant complex‐based μ‐O• bridged Cu(II)2 active species is formed from a bis‐μ‐oxo Cu ...
Kyosuke Fujikawa, Momoe Kawahashi, Alexander Granichny, Siegfried Schindler, Hiroaki Kitagishi, Masahito Kodera   +5 more
wiley   +1 more source

Polysilane‐Supported Nickel as an Efficient Catalyst for the Hydrogenation of Aromatic Compounds†

Chinese Journal of Chemistry, EarlyView.
A Ni/Si catalyst obtained from the reaction of poly(monohydro)silane with Ni(cod)2 serves as an effective heterogeneous catalyst for the hydrogenation of arenes under reaction conditions that are significantly milder than those required for conventional nickel‐based catalysts such as Raney nickel.
Hiromu Baba, Yusuke Sunada
wiley   +1 more source

A screening method for ranking chemicals by their fate and behaviour in the environment and potential toxic effects in humans following non-occupational exposure [PDF]

, 2004
A large number of chemicals are released intentionally or unintentionally into the environment each year. These include thousands of substances that are currently listed worldwide and several hundred new substances added annually (Mücke et al., 1986 ...
Capelton, A, Duarte-Davidson, R, Troisi, G   +2 more
core  

Engineered Metal–Organic Frameworks‐Based Materials for Environmental Detection

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Engineered metal–organic frameworks (MOFs) regulated by various material modification strategies are discussed for environmental contaminant detection under different sensing mechanisms, providing future improvements of MOFs in environmental detection. Sensitive and selective detection of contaminants is crucial for environmental protection.
Pan Gao, Song Wang, Yuechao Yao, Yibo Dou   +3 more
wiley   +1 more source

Indirect electroreduction as pretreatment to enhance biodegradability of metronidazole.

, 2014
International audienceThe removal of metronidazole, a biorecalcitrant antibiotic, by coupling an electrochemical reduction with a biological treatment was examined.
Amrane, Abdeltif, Bellakhal, N., Floner, Didier, Fourcade, Florence, Geneste, Florence, Saidi, I., Soutrel, Isabelle   +6 more
core   +3 more sources

Highly efficient aqueous phase reduction of nitroarenes catalyzed by phosphine-decorated polymer immobilized ionic liquid stabilized PdNPs [PDF]

, 2018
Palladium nanoparticles stabilized by lightly cross-linked phosphine-decorated polymer immobilized ionic liquids (PIIL) and their PEGylated counterparts (PEGPIIL) are highly effective catalysts for the aqueous phase hydrogenation and sodium borohydride ...
Backhouse, T., Bourne, R. A., Bradford, A., Chamberlain, T. W., Clayton, A., Doherty, S., Knight, J. G., Lovelock, Kevin, Saunders, F., Stones, R.   +9 more
core   +1 more source

Correlation Between the Molecular Structure of Metal‐Supporting Ligands and Catalysis in the Oxygenase‐Mimicking Immobilized Metal Complex Catalysts

European Journal of Inorganic Chemistry, EarlyView.
The correlation between the structures of metal complexes immobilized in the mesopores of hydrophobically modified silicate supports was examined in relation to the catalytic activities toward C‐H oxidation. On the alkene oxidation with H2O2, the iron catalyst bearing bis(imidazolyl)methane ligand promotes allylic oxidation, whereas the mononuclear ...
Yuta Akizawa, Hiroe Fukuzaki, Nana Aizawa, Sho Ikeda, Airi Kawabe, Saori Nishiyama, Iori Nagasawa, Masaya Okamura, Shiro Hikichi   +8 more
wiley   +1 more source

C=N-containing azaarenes as activating groups in enantioselective catalysis [PDF]

, 2013
Nitrogen-containing aromatic heterocycles (azaarenes) are of widespread chemical significance, and chi-ral compounds containing azaarenes feature prominently in pharmaceuticals, agrochemicals, and natural products.
Best, Daniel, Lam, Hon Wai
core   +2 more sources

Push–Pull Ynamines and Push–Pull Ynamides: Synthesis, Structure, Reactivity, and Application

European Journal of Organic Chemistry, EarlyView.
Push–pull ynamines and push–pull ynamides, which carry an EWG and an amino or amido group as EDG, are highly interesting classes of EDG‐EWG alkynes that have been intensively studied due to their exceptional reactivity. In this review, the synthesis, structure, reactivity, and application of push–pull ynamines, push–pull ynecarbamates, push–pull ...
Hans‐Joachim Gais
wiley   +1 more source

The Use of Chemical Reactivity Assays in Toxicity Prediction [PDF]

, 2011
The use of so-called “in chemico” methodology - abiotic assays that measure chemical reactivity - is gaining ground as relevant and reliable means of toxicity prediction.
ASTURIOL David, WORTH Andrew
core   +1 more source