An efficient methodology for the synthesis of unsymmetrical biheteroaryl molecules has been developed via Pd(II)-catalyzed oxidative C−H/C−H cross-coupling heteroarenes. inversion in reactivity and selectivity achieved successfully to perform desired heterocoupling. This process allows heterocoupling not only electron-rich N-containing heteroarenes (e.g., xanthines, azoles, indolizines) but also electron-poor pyridine N-oxides with various thiophenes or furans.

Abstract Proton storage in rechargeable aqueous zinc‐ion batteries (ZIBs) is attracting extensive attention owing to the fast kinetics of H + insertion/extraction. However, it has not been achieved organic materials‐based ZIBs with a mild electrolyte. Now, based on diquinoxalino [2,3‐ :2′,3′‐ c ] phenazine (HATN) electrolyte are developed. Electrochemical and structural analysis confirm for first time that such Zn–HATN experience uptake/removal behavior highly reversible evolution HATN. The...

Fishing for complements! There is an alternative to the useful Fischer indole synthesis. The new method utilizes same retrosynthetic disconnection but based on a RhIII-catalyzed directed CH activation step and successive coupling with alkynes.

The first highly efficient and scalable cobalt-catalyzed directed C-H functionalization with carbene precursors is presented. This methodology provides a modular route towards new class of conjugated polycyclic hydrocarbons tunable emission wavelengths both in solution the solid state.

A window of opportunity: general copper-catalyzed C-H bond-activation path allows arylation heterocycles with a wide range aryl bromides (see scheme). The reaction shows excellent regioselectivity and exhibits good functional group tolerance. 8-aryl xanthines exhibit fluorescence in variety solvents show promise as reagents for biological imaging.

The first example of direct and site-selective arylation indoles at the C6 position has been reported. key to this high regioselectivity is appropriate choice N–P(O)tBu2 directing group use diaryliodonium triflate salts as coupling partners in presence catalytic CuO. protocol distinguished by mild reaction system that avoids ligand additives, exhibiting wide scope indole arene components without compromising its efficiency scalability, thus representing a significant advancement...

N-heterocyclic carbene (NHC)-metal complexes have become known as efficient catalysts for numerous transition metal catalyzed processes. An important application of many NHC-metal is in the field asymmetric catalysis, and this achieved through introduction chiral information on NHC ligands. Among transformations by hydrogenation, which an attractive process synthesis optically active compounds due to its high atom economy. However, date, few been reported be highly stereoselective...

A new, efficient protocol for the synthesis of di(hetero)aryl sulfides is described. Cheap and easily available arylsulfonyl chlorides as a sulfur source reductively couple with electron-rich (hetero)arenes (e.g., indolizines, indoles, benzenes, etc.) in presence triphenylphosphine to afford thioethers good yields.

Gemischtes Doppel: Bei der hoch regioselektiven C3-Heteroarylierung eines Indols oder Pyrrols mit einer Vielzahl elektronenreicher und -armer N-Heteroarene, für die ein Palladium-Kupfer-Cokatalysatorsystem eingesetzt wird, liefert doppelte C-H-Aktivierung selektiv das unsymmetrische Diheteroaryl nicht Homokupplungsprodukte.

An efficient rhodium(III)-catalyzed redox-neutral C–H activation/cyclization/isomerization strategy to prepare isoquinolines with complete regioselectivity from aromatic oxime esters and diverse 1,3-dienes is described. The advantages of this process are: (1) no need for an external oxidant; (2) simple convenient reaction conditions; (3) regioselectivity; (4) broad scope substrates.

A smooth operator: The copper-catalyzed synthesis of phenols from aryl halides was carried out under relatively mild reaction conditions. Alkyl ethers and benzofurans could also be prepared smoothly by one-pot domino protocols based on hydroxylation iodides (see scheme). Detailed facts importance to specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted the authors. Please note: publisher is...

Abstract A Rh III ‐catalyzed C–H activation/cyclative capture approach, involving a nucleophilic addition of C(sp 3 )–Rh species to polarized double bonds is reported. This constitutes the first intermolecular catalytic method directly access 1‐aminoindolines with broad substituent scope under mild conditions.

The chelation-assisted strategy has been endowed with some novel functions in the Rh(III)-catalyzed dehydrogenative coupling of indoles/pyrroles heteroarenes. While reaction conditions used are rather common, can close homo-coupling pathway each partner, and dramatically extend substrate scope along exclusive indole or pyrrole C2-site selectivity. This is first example describing that a catalytic system allows oxidative C–H/C–H hetero-coupling not only between two electron-rich heteroarenes...

Abstract The first CH bond activation with pyridotriazoles as coupling partners is presented using a Rh III catalyst. can be used new carbene precursors in for direct access to novel fluorescent scaffolds. These tunable fluorophores applied the detection of metal ions.

Hexaazatrinaphthylene (HATNA) derivatives have been successfully shown to function as efficient electron-transporting materials (ETMs) for perovskite solar cells (PVSCs). The demonstrate a superior power conversion efficiency (PCE) of 17.6 % with negligible hysteresis. This study provides one the first nonfullerene small-molecule-based ETMs high-performance p-i-n PVSCs.

Two to four! Readily available flavones and chromones were efficiently converted into four valuable chiral classes of O-heterocycles—flavanones, chromanones, flavanols, chromanols—by means an enantioselective Ru/NHC-catalyzed hydrogenation process (see scheme; NHC=N-heterocyclic carbene, PCC=pyridinium chlorochromate). As a service our authors readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed may be re-organized for online...

Rhodium catalysis: A highly efficient and general method has been established to prepare cinnolines, cinnolinium salts, polycyclic salts through the rhodium(III)-catalyzed oxidative CH activation/cyclization of azo compounds with alkynes (see scheme). Key features this methodology include unprecedented capacity create both cinnoline frameworks. As a service our authors readers, journal provides supporting information supplied by authors. Such materials are peer reviewed may be re-organized...

Herein, a rhodium(III)-catalyzed oxidative C–H activation of simple arylphosphonates and phosphonamides with subsequent coupling alkenes (olefination), internal alkynes (hydroarylation cyclization), or arenes to give access diverse P-containing functional frameworks is reported.

Despite the demonstrated high power conversion efficiency (PCE) of perovskite solar cells (PVSC), long-term stability device operated in humid environments under photo- and thermal stresses is still a serious concern prior to any commercialization. To provide possible solutions overcome this hurdle, we have synthesized an n-type conjugated molecule, c-HATNA, that can be crosslinked as electron-transporting layer (ETL) on top desired perovskites. By proper doping increase its property, PCE...

Crossing N-bridges! A ruthenium/N-heterocyclic carbene (NHC) complex serves as the catalyst for high-yielding and completely regioselective asymmetric hydrogenation of substituted indolizines 1,2,3-triazolo-[1,5-a]pyridines. This method should provide ready access to bicyclic products bearing an N-bridgehead, a motif appearing in 25–30 % all naturally occurring alkaloids.

Fischen nach Komplementen! Eine Alternative zu der nützlichen Fischer-Indolsynthese wird vorgestellt. Während die neue Methode gleichen retrosynthetischen Schnitte nutzt, basiert sie auf einem RhIII-katalysierten dirigierten C-H-Aktivierungsschritt und einer sukzessiven Kupplung mit Alkinen. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed may be re-organized for online delivery, but not...

Abstract Proton storage in rechargeable aqueous zinc‐ion batteries (ZIBs) is attracting extensive attention owing to the fast kinetics of H + insertion/extraction. However, it has not been achieved organic materials‐based ZIBs with a mild electrolyte. Now, based on diquinoxalino [2,3‐ :2′,3′‐ c ] phenazine (HATN) electrolyte are developed. Electrochemical and structural analysis confirm for first time that such Zn–HATN experience uptake/removal behavior highly reversible evolution HATN. The...

The first nickel(0)-catalyzed linear-selective hydroarylation of unactivated alkenes and styrenes with organoboronic acids are achieved under redox-neutral conditions.