Results 51 to 60 of about 3,603 (167)

Para-selective nitrobenzene amination lead by C(sp2)-H/N-H oxidative cross-coupling through aminyl radical

Nature Communications
Arylamines, serving as crucial building blocks in natural products and finding applications in multifunctional materials, are synthesized on a large scale via an electrophilic nitration/reduction sequence.
Zhen Zhang, Shusheng Yue, Bo Jin, Ruchun Yang, Shengchun Wang, Tianqi Zhang, Li Sun, Aiwen Lei, Hu Cai   +8 more
doaj   +1 more source

Effect of different carbon materials as electron shuttles in the anaerobic biotransformation of nitroanilines [PDF]

, 2016
Aromatic amines resulted from azo dyes biotransformation under anaerobic conditions are generally recalcitrant to further anaerobic degradation. The catalytic effect of carbon materials (CM) on the reduction of azo dyes is known and has been confirmed in
Amezquita-Garcia, Carabineiro, Cervantes, Chung, Chung, Donlon, Donlon, Enterría, Figueiredo, Figueiredo, Fu, Garrigós, Gong, Gonçalves, Jbarah, Kato, Liu, Lovely, Malca-Mor, Mezohegyi, Orge, Pereira, Pereira, Raymundo-Piñero, Razo-Flores, Sarasa, Spain, Tessonnier, Van der Zee, Van der Zee, Van der Zee, Wang, Yang, Yu   +33 more
core   +1 more source

Photocatalytic Vanadium‐Mediated Amination of Benzene With Hydroxylamine

Chemistry – A European Journal, EarlyView.
Photochemical activation of N‐phenylphenothiazine (PPT) enables a selective direct benzene amination with hydroxylamine in the presence of various vanadium catalysts under mild reaction conditions. Spectroscopic and kinetic analyses identify a key vanadium(IV)‐hydroxylamine intermediate, elucidate the crucial roles of the acidic medium, the ...
Dana Králová, Maximilian Philipp, Matthias Schmalzbauer, Thilo Reiter, Bernd Schäfer, Ruth M. Gschwind, Burkhard König   +6 more
wiley   +1 more source

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

Crystallographic Distinction between “Contact” and “Separated” Ion Pairs:  Structural Effects on Electronic/ESR Spectra of Alkali-Metal Nitrobenzenides [PDF]

, 2004
The classic nitrobenzene anion-radical (NB-• or nitrobenzenide) is isolated for the first time as pure crystalline alkali-metal salts. The deliberate use of the supporting ligands 18-crown-6 and [2.2.2]cryptand allows the selective formation of contact ...
Davlieva, M. G., Kochi, Jay K., Lindeman, Sergey V., Lü, Jian-Ming   +3 more
core   +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

Kasha or state selective behavior in the photochemistry of ortho-nitrobenzaldehyde? [PDF]

, 2012
The photochemistry of ortho-nitrobenzaldehyde dissolved in tetrahydrofuran was studied by means of femtosecond UV/Vis and IR spectroscopy. Comparison was made of the spectral and temporal signatures for similar to 400 nm and similar to 260 nm excitation.
Becker, Chiang, Cordes, Donten, El-Sayed, Elsaesser, Englman, Fedorov, Fujino, G. Ryseck, Galbavy, Gentili, George, Heinz, Kasha, Kovalenko, Kovalenko, Kuberski, Kuhn, Kukura, Laimgruber, Laimgruber, Laimgruber, Leyva, Leyva, Leyva, Lorenc, Martini, Migani, N. Regner, P. Gilch, Plaza-Medina, Satzger, Schmierer, Schrader, Schrader, T. Schmierer, T. Villnow, Takezaki, Takezaki, Tamai, Tauber, Wolpert, Yip, Yip, Zewail   +45 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

Palladium nanoparticles on carbon nanotubes as catalysts of cross-coupling reactions [PDF]

, 2013
The macroscopic properties of composite nanotube-nanoparticle superstructures are determined by a complex interplay of structural parameters at the nanoscale.
Akbayrak, Balanta, Billingsley, Cano, Corma, Coudary, Day, Day, de Vries, Eder, Fihri, Flanagan, Friesen, Georgakilas, Gniewek, Guerra, Han, Heck, Heravi, Karousis, Liu, Mazumber, Miyaura, Miyaura, Miyaura, Monopoli, Myers, Narayanan, Narayanan, Pan, Peng, Rance, Sonogashira, Sun, Tolles, Tzitzios, Wildgoose, Xue, Yang, Yasuda, Ye, Yin, Zamborini   +42 more
core   +2 more sources

Cold EI—The Way to Improve GC‐MS and Increase Its Range of Applications

Mass Spectrometry Reviews, EarlyView.
ABSTRACT Gas chromatography‐mass spectrometry (GC‐MS) with Cold electron ionization (EI) is based on interfacing the GC and MS with a supersonic molecular beam (SMB) along with electron ionization of vibrationally cold sample compounds in the SMB in a contact‐free fly‐through ion source (hence the name Cold EI).
Aviv Amirav, Benny Neumark, Oneg Elkabets, Alex Yakovchuk   +3 more
wiley   +1 more source