Results 171 to 180 of about 50,655 (288)

Stillborn

The Iowa Review, 1994
openaire   +1 more source

Nucleophilic Gallyl Anions Enable Ga─Au Bimetallic Ammonia Activation

Angewandte Chemie, EarlyView.
Unlocking gallyl nucleophiles: Counterion control enables formation of an unsupported gallyl─gold complex. Gold coordination induces a polarity switch at gallium, enabling cooperative activation of NH3 and related N─H/O─H substrates under mild conditions.
Hellen Videa, Keelan M. Byrne, Tobias Krämer, Antonio J. Martínez‐Martínez   +3 more
wiley   +2 more sources

Potassium‐Ligand Cooperation Facilitated Chemical Bond Activation and Catalytic Hydrogenation

Angewandte Chemie, EarlyView.
A new strategy for alkali metal‐mediated catalysis based on metal–ligand cooperation (MLC) is presented. Potassium pincer complexes exhibit remarkable reactivity toward a range of molecules via an unprecedented potassium–ligand cooperative mechanism. This reactivity enables potassium‐catalyzed hydrogenation, providing efficient reduction of ketones and
Yaoyu Liang, Irena Efremenko, Thiyagarajan Subramanian, Amit Kumar, Liat Avram, Yael Diskin‐Posner, David Milstein   +6 more
wiley   +2 more sources

Unlocking a Nitrosuccinate Lyase for Decarboxylative Enzymatic Hydronitration

Angewandte Chemie, EarlyView.
The nitrosuccinate lyase CreD catalyzes C–NO2 bond formation using nitrite in water and shows synthetic practicality with high turnover numbers up to 102,000. A combination of protein engineering and computational methods helped to reveal the mechanistic principles that underpin this unique enzymatic activity.
Matteo Aleotti, Hannah Dreisbach, Rémi Corlay, Clara Weber, Tamara Reiter, Wael Elaily, Bastian Daniel, Klaus Zangger, Pedro A. Sánchez‐Murcia, Mélanie Hall   +9 more
wiley   +2 more sources

A safe and efficacious inactivated vaccine aids prevent reproductive failure associated with congenital toxoplasmosis in ovine. [PDF]

Vet Res
Regidor-Cerrillo J, Largo-de la Torre A, Sánchez-Sánchez R, Ferre I, Moreno-Gonzalo J, Ortega-Mora LM.   +5 more
europepmc   +1 more source

An Enantioselective Alkene Aminoarylation to Form Chiral Indolines via Electrostatically‐Directed Palladium Catalysis

Angewandte Chemie, EarlyView.
Enantioselective aminoarylation of ortho‐allyl anilines is achieved under mild conditions. Key to success is the electrostatically‐directed nature of the key aminopalladation step, achieved by using the sulfonated chiral ligand sSPhos on palladium. A detailed study of electronic trends allows tuning of the sulfonamide protecting group to enable good ...
Max Kadarauch, Paul T. Jirsch, H. Erik Diepers, Hamzah Sharif, Robert J. Phipps   +4 more
wiley   +2 more sources

An influenza D virus in D/Yama2019 lineage from stillbirth fetus of cattle in China. [PDF]

J Vet Med Sci
Xue L, Guo T, Feng Y, San Z, Wang D, Guo L.   +5 more
europepmc   +1 more source

Generalized Analysis of Electrophilic Small Molecules

Angewandte Chemie, EarlyView.
Generalized fragmentation patterns stand to unlock the utility of tandem‐mass spectrometry for chemical reaction analysis but are bottlenecked by time consuming method development. Here were show how we can analyze most electrophilic small molecules the same way by their conjugation with a simple MS/MS encoded chemical probe.
Uma Neelakantan, Maowei Hu, Jiya Bhatia, Huyen N. Nguyen, John (Bobby) Yeboah, Eirinaios I. Vrettos, Dionysius Copoulos, Khue N. M. Nguyen, Madan M. Babu, Daniel J. Blair   +9 more
wiley   +2 more sources

Response to excessive selenium intake in the modern sow; a retrospective analysis of a case review. [PDF]

Transl Anim Sci
Molnes S, Vinje H, Opheim M, Granquist EG, Nyquist N.   +4 more
europepmc   +1 more source

Unexpected perinatal death caused by an occult MTM1 mutation: a case report. [PDF]

Front Med (Lausanne)
Zhu MM, Li DM, Wu YC, Yao Q, Qie MR, Sun WW.   +5 more
europepmc   +1 more source