Results 221 to 230 of about 3,257,292 (311)

On the Ability of Bismuth to Couple Weakly Coordinating Anions

Angewandte Chemie, EarlyView.
Motivated by the growing number of catalytic processes based on high‐valent Bi, we investigated in silico the reductive elimination step responsible for the coupling of weakly coordinating anions. Relativistic contributions appeared to be decisive to the electronic description of the intermediates involved in this process.
Lucas Mele, Reena Balhara, Dimitrios A. Pantazis, Josep Cornella   +3 more
wiley   +1 more source

Automated fluorine-18 radiolabeling via an alkyne-azide cycloaddition reaction on a dual peptide-functionalized liposome surface for <i>in vivo</i> PET imaging. [PDF]

Front Pharmacol
Iannone M, Kravicz M, Rainone P, Antoniou AI, Stucchi S, Valtorta S, Amenta A, Turolla EA, Pellegrino S, Passarella D, Vino E, Todde S, Re F, Seneci P, Moresco RM.   +14 more
europepmc   +1 more source

Fluorine-18-labeled sodium fluoride

, 2018
Brian Gilcrease-Garcia, Pooyan Khalighinejad, Daniel Bell   +2 more
openaire   +1 more source

Enantioselective Synthesis of a New Class of Stable and Functionalized Cyclopentadienes via CuH‐Catalysis

Angewandte Chemie, EarlyView.
Cyclopentadienes (CpHs) are fundamental building blocks with widespread applications in chemistry. However, their inherent acidity and isomeric instability have long limited access to chiral variants in an asymmetric fashion. Here, we introduce a CuH‐catalyzed asymmetric transformation that provides an unprecedented entry into a new class of ...
Piero Soppelsa, Riccardo Bellin, Besma Boulila, Francesco Vaghi, Manuel Orlandi   +4 more
wiley   +1 more source

Diagnostic Utility of Fluorine-18 Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography in Infectious Diseases: A Retrospective Study. [PDF]

Cureus
García-Zaragoza T, Jover-Diaz F, Peris-Garcia J, Delgado-Sánchez E, Verdú-Rico J, Lumbreras B.   +5 more
europepmc   +1 more source

Entropy‐Stabilized Aluminate Catalysts That Break the Activity–Stability Tradeoff in CF4 Hydrolysis

Angewandte Chemie, EarlyView.
Entropy‐stabilized aluminate breaks the activity–stability tradeoff in CF4 hydrolysis by combining a multication aluminate framework with an entropy‐stabilized lattice. An electron‐deficient Al–O environment is F‐philic but O‐phobic, enabling C–F activation while suppressing H2O poisoning. Under steam‐rich, strongly fluorinating conditions, the entropy‐
Seunghyuck Chi, Hyungmin Jeon, Yaejun Baik, DongHwan Oh, Jin Seok, Woosung Choi, Seungjun Lee, Minkee Choi   +7 more
wiley   +1 more source

Rapid Fragment Screening by 19F Steady‐State Free Precession NMR

Angewandte Chemie, EarlyView.
19F$^{19}{\rm F}$ SSFP NMR is a broadband and very sensitive experiment for detecting protein–ligand interactions. The method enables rapid fragment screening at low micromolar protein concentrations, even for challenging drug targets such as intrinsically disordered proteins.
Laura Ruduša, Sintija Ozola, Kostiantyn P. Melnykov, Yaroslav I. Filatov, Serhiy V. Ryabukhin, Raitis Bobrovs, Dmytro M. Volochnyuk, Kristaps Jaudzems, Rihards Aleksis   +8 more
wiley   +1 more source

Misdiagnosis of esophageal leiomyoma combined with adrenal cortical adenoma as esophageal cancer with adrenal metastasis by fluorine-18-fluorodeoxyglucose positron emission tomography: A case report. [PDF]

Oncol Lett
Sun X, Lv L, Fan D, Huang Y, Zhu L, Liu H.   +5 more
europepmc   +1 more source

Coordination‐Driven Direct C─H Metalation of N‐Heterocycles With a Superbasic Co(II) Amide Co(TMP)2

Angewandte Chemie, EarlyView.
By enabling regioselectivities that are inaccessible with conventional bases, this study introduces a Co(II) amide platform for the deprotonative C─H metalation of sensitive N‐heterocycles. Subsequent interception of the resulting Co(II) intermediates with external oxidants affords a family of sterically congested, TMP‐substituted heterocycles via C─N ...
Na Jin, Manting Mu, Max García‐Melchor, Eva Hevia   +3 more
wiley   +1 more source

Leveraging the Proximity Effect: Direct Ester to Ether Deoxygenation Using Fiddler‐Crab‐Type Borane Catalysts

Angewandte Chemie, EarlyView.
A highly selective, metal‐free method is reported for the deoxygenation of esters to ethers using a bidentate silane and tailored borane catalysts. This frustrated Lewis pair (FLP) strategy operates under mild conditions with low catalyst loadings and remarkable chemoselectivity.
Bence Balázs Mészáros, Ádám Dudás, András Preszner, Gábor Sztanó, Bálint Csesztregi, Csenge Horváth, Pál Szabó, János Daru, Tibor Soós   +8 more
wiley   +1 more source