Results 141 to 150 of about 66,773 (266)

Zähmung eines blauen Gases—Struktur und Chemie von Hexafluorthioaceton

Angewandte Chemie, EarlyView.
Hexaflouorthioaceton (1), ein blaues Gas bei Raumtemperatur, wurde durch Vakuumpyrolyse des zyklischen Dimers bei 660 °C synthetisiert. Wir diskutieren grundlegende Eigeschaften des schwer greifbaren 1, einschließlich Einkristallstruktur und Kernmagnetische Resonansspektroskopie, obwohl es eine starke Tendenz zur Dimerisierung selbst bei –74 °C zeigt ...
Hennes Günther, Antti J. Karttunen, Xiulan Xie, Frank Tambornino   +3 more
wiley   +1 more source

A universal atomically dispersed cobalt catalyst for alkylation of ketones alcohols and lignin-derived compounds. [PDF]

Nat Commun
Ma Z, Zhang B, Cui Y, Ren C, Li X, Jagadeesh RV, Beller M.   +6 more
europepmc   +1 more source

Synthese Unkonventioneller α‐Polyhalogenierter Amine Durch Hydroaminoalkylierung

Angewandte Chemie, EarlyView.
Es wird ein redox‐neutrales Verfahren beschrieben, bei dem Alkene und Alkine unter Verwendung stabiler Hemiaminal‐Reagenzien in α‐Polyhalogenmethylamine umgewandelt werden. Dieser Ansatz ermöglicht den Zugang zu α‐CF3‐, α‐CF2H‐, α‐CF2Cl‐, und α‐CFClH‐Aminen und besticht durch ein breites Substratspektrum, eine hohe Toleranz gegenüber funktionellen ...
Angela K. Hofmeister, Giulia Iannelli, Péter Angyal, Augustin Malandain, Daniel Kaiser, Boris Maryasin, Hanspeter Kählig, Matteo Barel, Gaia Novarino, Nuno Maulide   +9 more
wiley   +1 more source

Stereoselective, borane-catalysed synthesis of <i>syn</i>-β-hydroxyketones from α,β-unsaturated ketones. [PDF]

Chem Sci
Macleod J, Nimmo AJ, Cockcroft JHP, Dominguez-Molano P, Nichol GS, Thomas SP.   +5 more
europepmc   +1 more source

Water‐Derived Radical Species Initiate Six‐Electron Oxidation of Cyclic Ketones in Microdroplets

Angewandte Chemie, EarlyView.
Spontaneous six‐electron oxidation of cyclic ketones to yield dicarboxylic acids/keto acids is achieved in ethanol microdroplets containing about 2% water under ambient conditions without any metal salts, acids, or oxidants. Mechanistic studies show that trace amounts of water and molecular oxygen serve as active oxidants in this transformation ...
Muhammad Mujahid Ali, Manish Jana, William LeFever, Robert Graham Cooks   +3 more
wiley   +1 more source

Peptide modification <i>via</i> a mild carbonylative Suzuki-Miyaura reaction gives late-stage access to diaryl-ketones. [PDF]

Chem Sci
Kleppen JP, Scott NWJ, Phillips TJ, Stankevich KS, Donald JR, Barber LJ, Lewis KM, Fairlamb IJS, Spicer CD.   +8 more
europepmc   +1 more source

Chemoenzymatic Synthesis of Heparan Sulfate Oligosaccharides by a Covalent Catch‐and‐Release Approach

Angewandte Chemie, EarlyView.
A glycan having a hydrazide tag enables chemoenzymatic synthesis of HS oligosaccharides. The hydrazide can, under mild acidic conditions, react with an aldehyde‐containing resin to give an immobilized hydrazone that is stable under neutral conditions, allowing washing. The product can be released by transiminolysis using aqueous hydroxylamine to give a
Francesco Palmieri, Chin Huang, Digantkumar Chapla, Kelley W. Moremen, Geert‐Jan Boons   +4 more
wiley   +1 more source

Carbonylative Synthesis of β-Trifluoromethylated Heterocyclic Ketones through 1,2-Trifluoromethylation and Minisci Carbonylation of Alkenes. [PDF]

Org Lett
Miao RG, A RH, Wu XF.
europepmc   +1 more source

A Novel Class of “Super‐Strained” Spiro Heterocycles: Gateway to 1‐Azaspiro[3.3]heptane Derivatives, and Biological Validation

Angewandte Chemie, EarlyView.
A new class of “super‐strained” spiro heterocycles—spirocyclic 1‐azabicyclo[1.1.0]butanes—was synthesized via insertion of cyclobutane‐, oxetane‐, and azetidine‐containing sulfonium reagents into substituted azirines. The stability of this new class of compounds was studied.
Philipp Natho, Annarita Vicenti, Marco Colella, Francesco Pasca, Giuseppe Romanazzi, Mauro Niso, Carmen Abate, Ernesto Mesto, Emanuela Schingaro, Renzo Luisi   +9 more
wiley   +1 more source

Editorial: Advanced biocatalysts for sustainable chemical synthesis. [PDF]

Front Microbiol
Verma ML, Yildirim D, Boddy CN.
europepmc   +1 more source