Nickel-catalyzed decarbonylation of N-acylated N-heteroarenes is developed. This method can be used to produce a variety N-aryl heteroarenes, including pyrroles, indoles, carbazoles and phenoxazines, using benzoic acid derivatives as arylating reagents. Arylnickelamide intermediates that are relevant the catalytic reaction were characterized by X-ray crystallography. When benzimidazoles substrates, accompanied 1,2-migration form 2-arylated benzimidazoles.

The usefulness of conversational robots has been demonstrated in various fields. It is suggested that expressing subjective opinions essential for to stimulate users' willingness engage conversation. However, a challenge remains users often find it difficult attribute robots. Therefore, this study aimed examine the factors influencing attribution We investigated robot and human may affect opinion Furthermore, these were four different cases, adopting combination robots' types control...

Background Because H2O2 is generated by various oxidase-catalyzed reactions, a highly sensitive determination method of applicable to measurements low levels oxidases and their substrates such as glucose, lactate, glutamate, urate, xanthine, choline, cholesterol NADPH. We propose herein new, for the measurement glucose using fluorescence correlation spectroscopy (FCS). Methodology/Principal Findings FCS has advantage allowing us determine number fluorescent molecules. measures fluctuations...

Sulfonated solid acid materials, such as sulfonated carbon catalysts, are promising materials heterogeneous catalysts for the hydrolysis of esters and polysaccharides in water solvents. The catalytic active site is a sulfonic functional group. Compared to conventional strong acidic ion-exchange resin have less groups but higher activity per catalyst weight. However, details properties substrate suitability both unclear. In this study, hydrolytic activities adsorption were investigated...

We report a theoretical study on iron oxyhydroxide (FeOOH). The FeOOH surface is expected to act as an efficient electrochemical catalyst for the oxygen evolution reaction (OER), because it based iron, element of fourth highest Clarke number. Experimentally, OER activity β-FeOOH known be higher than that γ-FeOOH. However, details mechanism and reactivities polymorphs have not yet been fully understood. performed first-principles calculations bulk surfaces γ-FeOOH using density functional...

The PdII -catalyzed dehydroboration of boron enolates generated from ketones and 9-iodo-9-borabicyclo[3.3.1]nonane was achieved, providing a synthetically versatile protocol to α,β-unsaturated ketones. compound employed in this reaction worked catalytically the presence Cu(OAc)2 . high trans-selectivity olefinic moiety observed. Aryl halide moieties (-Br -Cl) remained intact for spite Pd species. An ester substrate could also be applied when stoichiometric amount used. crossover reactions...

We report a unique phototunable cell killing technique using diarylethene molecules as photo-isomerizing-molecular switches. These were delivered to DNA in the nucleus due closed-form generated by UV light, and then blue light triggered killing. A irradiation switches open form, having no intercalation activity, closed form induce DNA. This isomer, thus prepared ready for action, exerts photocytotoxicity upon subsequent irradiation. Molecular biological analysis clarifies that is...

The bioorganometallic platinum(II) compounds PtU6 and PtU5 were designed by the conjugation of corresponding uracil derivative organoplatinum(II) compound [4-octyloxy-(C^N^N)PtCl]. single crystal X-ray structure determination revealed formation dimeric through intermolecular hydrogen bonds between moieties two independent molecules, wherein each hydrogen-bonded dimer was connected Pt(II)–Pt(II) π–π interactions. tuning emission properties achieved changing direction bonding sites molecular...

A study on the rapid identification of phthalates in polymer materials has been conducted by employing gas chromatography-mass spectrometry coupled with a pyrolyzer (Py-GC/MS). Since Py-GC/MS does not require any complex solvent-extraction process, screening should be possible. In this study, samples were directly introduced into order to thermally extract from under specific heating conditions. By optimizing parameters, sequential testing cycle 35 min per sample was feasible without causing...

To understand the mechanism of water-splitting reaction in photosynthesis, dynamics water molecules surrounding oxygen evolution center (OEC) involving Mn4O5Ca cluster photosystem II (PSII) is investigated using molecular (MD) simulation. During simulation, interspace around was filled with numerous molecules. The traffic bidirectional pathway between and outside PSII by analyzing MD trajectories. result this simulation suggests that delivery to driven self-diffusion coupled synchronized...

In this study, a new type of single-molecule white luminescence is presented. This accomplished by dual emission from two different stacking patterns having overlapping areas in the crystal.

Abstract As the current state of Metaverse is largely driven by corporate interests, which may not align with scientific goals and values, academia should play a more active role in its development. Here, we present challenges solutions for building that supports systems biology research collaboration. Our solution consists two components: Kosmogora , server ensuring biological data access, traceability, integrity context highly collaborative environment such as metaverse; ECellDive virtual...

Abstract NCN pincer palladium(II) complexes bearing a 6‐ethynyl‐1‐octyluracil moiety were designed by the combination of an as organometallic compound and uracil derivative nucleobase to afford bioorganometallic compounds. The reaction ligand with Pd(dba) 2 (dba = dibenzylideneacetone) led formation complex Pd‐Br . crystal structure cationic Pd‐MeCN , which was prepared treatment AgOTf (OTf trifluoromethanesulfonate) in acetonitrile, revealed that dimeric formed through intermolecular...

A bioorganometallic compound GPhAuPPh3 composed of the guanosine and alkynyl-Au(I)PPh3 moieties was prepared. The self-assembly properties in both absence presence KPF6 or La(OTf)3 were studied by NMR, UV-vis, CD fluorescence measurements. When monovalent added, expected octamer formed without any Au(I)–Au(I) interactions. This is due to bulky phosphine moiety that makes Au(I) far away each other. In contrast, trivalent La(OTf)3, a more closely stacked obtained than KPF6, leading

Abstract A reliable method for structural analysis is crucial the forensic investigation of new psychoactive substances (NPSs). Towards this end, mass spectrometry one most efficient and facile methods identification NPSs. However, differentiation among 2‐, 3‐, 4‐fluoromethcathinones ( o ‐, m p ‐FMCs), which are ring‐fluorinated positional isomers part major class NPSs referred to as synthetic cathinones, remains a challenge. This mostly due their similar retention properties nearly...

Bare TiO2 photocatalyst almost quantitatively converted nitrobenzene to aniline with various saccharides without the use of hydrogen gas. Although was formed when any saccharide used, disaccharides (lactose, maltose, and sucrose) decreased reaction rate. The rate photocatalytic hydrogenation using is determined by degradation at positive holes. When glucose formic acid, arabinose, glyceraldehyde lactic acid were obtained, which are products that consistent product oxidation glucose.

Positional isomers o-, m-, and p-chloromethcathinones (CMCs) m- p-bromomethcathinones (BMCs) were effectively differentiated using gas chromatography (GC) energy-resolved mass spectrometry (ERMS) analyses. GC demonstrated that the free bases of CMC BMC simultaneously baseline-separated at a slow column heating rate (5 °C/min) conventional low-polar capillary column. ERMS showed trifluoroacetyl derivatives positional differed in spectral abundances both halophenyl halobenzoyl cations....