Results 261 to 270 of about 75,606 (303)

A Recognition Tag of Human Origin for Bioorthogonal Generation of Antibody‐Drug Conjugates using Microbial Biotin Ligase

ChemBioChem, EarlyView.
A human‐derived recognition tag of Pyrococcus horikoshii biotin ligase is fused to the monoclonal antibody trastuzumab at the C‐termini of either light or heavy chain. These fusion antibodies allow for the PhBL‐mediated introduction of desthiobiotin azide and the subsequent attachment of DBCO‐AF488 and DBCO‐Val‐Cit‐PAB‐MMAE via strain‐promoted azide ...
Peter Bitsch, Sebastian Bitsch, Noah Murmann, Ingo Bork, Janine Becker, Harald Kolmar   +5 more
wiley   +1 more source

Hydrazine as a Reducing Agent in Catalytic Transfer Hydrogenation Processes: Up‐to‐Date Overview Approaches

ChemCatChem, Volume 17, Issue 8, April 15, 2025.
Transfer hydrogenation serves as an alternative platform to promote facile organic transformation in a selective and clean manner, due to its atomic economy, high efficiency, and sustainability. Hydrazine hydrate is one of the common reducing agents used in the selective transfer hydrogenation/reduction methodologies.
Michael G. Kallitsakis, Kyriakos D. Nikopoulos, Ioannis N. Lykakis   +2 more
wiley   +1 more source

Development of Multipurpose Supported Asymmetric Salen Catalysts by Cu(0)‐Mediated Reversible Deactivation Radical Copolymerization

ChemCatChem, EarlyView.
The challenge of recycling heterogeneous catalysts and reusing them in different reactions was addressed. To this end, salen complexes were anchored on methacrylate insoluble polymers obtained using the Cu(0)‐mediated RDRP method. Their reactivity and recyclability were analyzed in asymmetric ring opening and dynamic kinetic resolution of epoxides ...
Rafaela Bechara, Mohamed Mellah, Nadine Barroca‐Aubry, François Ozanam, Anne‐Chantal Gouget‐Laemmel, Damien Aureau, Diana Dragoé, Philippe Roger, Emmanuelle Schulz   +8 more
wiley   +1 more source

Blue‐LED Oxidative Coupling of Amines to N‐Alkyl Imines by Metal‐Free Meso‐Tetraphenyl Porphyrin/Lignin‐Nanoparticles

ChemCatChem, Volume 17, Issue 8, April 15, 2025.
N‐alkyl imines were prepared from aromatic amines using blue‐LED‐driven photocatalysis combined with porphyrins on lignin‐nanoparticles. Abstract Photocatalysts based on the immobilization of meso‐TPP on lignin‐nanoparticles were prepared and applied in the one‐pot oxidative coupling of aromatic amines to N‐alkyl imines.
Natalia Ceccotti Vlas, Fabiana Fosso, Elisa De Marchi, Sofia Gabellone, Eliana Capecchi, Davide Piccinino, Lorenzo Botta, Raffaele Saladino   +7 more
wiley   +1 more source

Catalysis in Chemical Modification of Proteins

ChemCatChem, EarlyView.
Catalytic principles of synthetic organic chemistry have been increasingly applied to chemical modification of proteins during the recent years. This review article describes how seven types of catalytic systems —electrocatalysis, photocatalysis, metal catalysis, acid catalysis, organocatalysis, supramolecular catalysis, and heterogeneous catalysis ...
Seiya Ishizawa, Koki Fujimura, Kounosuke Oisaki, Shinichi Sato, Jun Ohata   +4 more
wiley   +1 more source

[CuI(PPh3)3]‐Mediated Arylation of 1,2,3‐Triazoles

ChemCatChem, EarlyView.
Arylation reactions are a powerful strategy to selectively prepare highly substituted heterocyles. Herein, the arylation of 1,4‐disubstituted 1,2,3‐triazoles with [CuI(PPh3)3] is reported in the presence of air and moisture. Suitable substrates include triazoles containing a pyridyl group, which are of interest in applications such as ancillary ligands
Steven Lal, Jialei Qian, Raul Pacheco‐Muino, Vera Kleene, Matthew J. Foulkes, Silvia Díez‐González   +5 more
wiley   +1 more source

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Sodium Azide Poisoning

Annals of Internal Medicine, 1975
Excerpt To the editor: Since we (RS, RG) were responsible for the suggestion that the therapeutic induction of methemoglobinemia might be of value in acute azide poisoning (1, 2), we are naturally ...
R.E. Gosselin, Robert Kruszyna, Roger P. Smith   +2 more
openaire   +2 more sources

A microbiological assay for sodium azide

Analytical Biochemistry, 1980
Abstract A reproducible and sensitive method is presented for quantitating sodium azide (NaN 3 ) that exploits the fact that NaN 3 inhibits Escherichia coli RNA synthesis. A linear correlation is observed between incorporation of [ 3 H]uridine into a trichloroacetic acid-precipitable form and NaN 3 concentration over a 31- to 2000-μg range of ...
Lynn P. Elwell, Leslie Walton
openaire   +3 more sources

Suicidal sodium azide ingestion

Annals of Emergency Medicine, 1987
Sodium azide (NaN3) is a highly reactive, toxic, widely used chemical. Although industrial exposure is common, fatal ingestion is rare. We describe the case of a 30-year-old man who ingested 15 to 20 g of sodium azide. He became comatose within two hours and eventually expired from a combination of acidosis, respiratory depression, and ventricular ...
Jonathan Abrams, Robert Meyer, Rif S. El-Mallakh   +2 more
openaire   +3 more sources

Polymerization of nitrogen in sodium azide

The Journal of Chemical Physics, 2004
The high-pressure behavior of nitrogen in NaN3 was studied to 160 GPa at 120–3300 K using Raman spectroscopy, electrical conductivity, laser heating, and shear deformation methods. Nitrogen in sodium azide is in a molecularlike form; azide ions N3− are straight chains of three atoms linked with covalent bonds and weakly interact with each other.
Mikhail Eremets, V. N. Denisov, Reinhard Boehler, Russell J. Hemley, M. Yu. Popov, I. A. Trojan   +5 more
openaire   +3 more sources