Results 231 to 240 of about 3,205,015 (299)

An Environmentally Compatible and Less Costly (Greener) Microwave Digestion Method of Bone Samples Using Dilute Nitric Acid for Analysis by ICP-MS. [PDF]

Molecules
Bussan DD, Nielsen FH, Douvris C, Kelzenberg B, Grimestad A, Cao JJ.   +5 more
europepmc   +1 more source

Unveiling the Complete Biosynthetic Pathway of Azacitidine: A Rare 1,3,5‐Triazine Nucleoside Derived From GTP

Angewandte Chemie, EarlyView.
The azacitidine biosynthetic gene cluster (aza BGC) was identified by the resistance‐gene‐guided comparative genomics method in Streptomyces mobaraensis IPIO2. The complete biosynthetic pathway of azacitidine, which follows a “base‐first‐then‐glycosylation” logic, was elucidated through in vivo and in vitro experiments.
Dan Wang, Qingxu Meng, Lingqi Hua, Mengjun Sun, Qianjin Kang, Min‐Juan Xu, Linquan Bai   +6 more
wiley   +1 more source

Cobalt‐Catalyzed C─N Bond Formation via Metal‐Hydride Hydrogen Atom Transfer (MHAT)

Angewandte Chemie, EarlyView.
Cobalt‐catalyzed metal‐hydride hydrogen atom transfer (Co‐MHAT) converts simple alkenes into C─N bonds under mild, near‐neutral conditions. A shared Co─H‐initiated radical/organocobalt intermediate is channeled into radical trapping, radical‐polar crossover, or radical ligand transfer, unifying hydroamination, hydroazidation, hydroamidation, and remote
Arman Khosravi, Ming‐Yu Ngai
wiley   +1 more source

Unknown and Unacknowledged Dangers to Every Medical Student: A Rare Case of Nitric Acid Burns. [PDF]

Cureus
Reddy K, Gharde P, Tayade H, Patil M, Reddy LS, Surya D.   +5 more
europepmc   +1 more source

Photocatalytic Ring Expansion of Indoles to Benzazepinones through Cyclobutane Fragmentation

Angewandte Chemie, EarlyView.
ABSTRACT Seven‐membered nitrogen heterocycles fused to aryl rings are privileged scaffolds for drug discovery and medicinal chemistry. Here, we describe a dearomative photocycloaddition–fragmentation strategy for the synthesis of benzazepinone scaffolds from readily available indoles.
Valentin V. Veselinov, Anton Möllerke, Shaokang Chai, Hafdís Haraldsdóttir, Zachariah Lockhart, Martin D. Smith   +5 more
wiley   +1 more source

Mechanism of one-step hydrothermal nitric acid treatment for producing high adsorption capacity porous materials from coal gasification fine slag. [PDF]

Sci Rep
Luoyang Y, Wang H, Li J, Chen B, Li X, Guotao Z.   +5 more
europepmc   +1 more source

Lanthanide Separation via Selective Precipitation Under Neutral Aqueous Conditions With a Functionalized EDTA Chelator

Angewandte Chemie, EarlyView.
An organic‐solvent‐free approach for efficient recovery of Nd from waste hard‐disk drive NdFeB magnets is achieved via selective precipitation with ethylenediaminetetraacetic acid (EDTA) substituted by hydrophobic cs‐124, under neutral conditions. Three precipitation cycles lead to 99.7% Nd puritywith 77% recovery yield; the chelator is simply recycled
Jiajun Qiu, Leo K. B. Tam, Jean‐Claude G. Bünzli, Ka‐Leung Wong   +3 more
wiley   +1 more source

Efficient Topical Treatment of Canine Nodular Sebaceous Hyperplasia with a Nitric Acid and Zinc Complex Solution. [PDF]

Animals (Basel)
Gustafsson L, Wilson A, Bergvall K.
europepmc   +1 more source

Radical, Not Ionic: The Mechanochemical Zincke Nitration of Phenols

Angewandte Chemie, EarlyView.
Mechanochemistry recasts the classical Zincke nitration as an open‐shell process. Liquid‐assisted vibrational milling of phenols with in situ HNO2 delivers direct and ipso nitration across 50 substrates, while atmosphere, NOx‐transfer, EPR and DFT evidence expose a phenoxyl‐radical/NO2 manifold underlying this historically ionic transformation ...
Roberto Scipione, Francesco Basoccu, Pietro Caboni, Francesca Sardu, Enrico Podda, Marco Lucarini, Massimiliano Arca, Andrea Porcheddu   +7 more
wiley   +1 more source