Rhodium Research Articles

Why rhodium prices have zoomed over 70% since 1 Jan 2021

Why rhodium prices have zoomed over 70% since 1 Jan 2021

Rhodium(III)-Catalyzed C–H Activation/Annulation To Form Isoquinolone Scaffolds

Rhodium(III)-Catalyzed C–H Activation/Annulation To Form Isoquinolone Scaffolds

Multi-applications of new trinuclear Zr-SMI complex

We report on the synthesis route and applications of new solid material Zirconium salicylate methylimidazole. Zirconium based complex was successfully synthesized by a cost-effective, simple stirring method on a hot water bath. The synthesized material arranged in layers with notable properties such as crystalline nature, highly homogeneous topology, and stable oxidation states at room temperature, and large surface area, and thermal stability. As-synthesized zirconium 3D H-bonded complex subjected to multiple applications since it has met desirable characteristics. Zr-SMI electrode has shown rare combination of pseudocapacitor-battery behavior. Supercapacity of 1165 mAhg−1 at 3 Ag−1 was achieved by the Zr-SMI electrode in basic electrolyte. Excellent electrochemical sensing response was found by the Zr-SMI electrode for an organic molecules such as Methylene blue (MB), and L-alanine analytes. In addition, Zr-SMI showed excellent catalytic property towards complete degradation of MB, Methyle orange (MO), and rhodium (RH) dyes. All these results implied the excellent electrochemical and catalytic behavior of Zr-SMI and proved as a promising material for multiple applications.

Фотоактивация комплексов родия(III)

Методом ЯМР 15N проведено исследование фотолиза водных растворов [Rh(NH3)5NO2](NO3)2. Установлено, что облучение при комнатной температуре приводит к обмену нитритного лиганда 15NO2– на 14NO2– в комплексе с измеряемой скоростью. В темновых условиях процесс не обнаруживается в течение нескольких недель. Предложен механизм фотолиза.

Isoquinolinediones and Isocoumarins by Rhodium(III)-Catalyzed C–H Activation of N-Tosylbenzamides

Isoquinolinediones and Isocoumarins by Rhodium(III)-Catalyzed C–H Activation of N-Tosylbenzamides

Rhodium(III)-Catalyzed Synthesis of (2H)-Indazoles from Azobenzenes

Key words indazoles - rhodium catalysis - azobenzenes - paraformaldehyde

Rhodium(III) C–H Activation Combined with N- and C-Annulations

Rhodium(III) C–H Activation Combined with N- and C-Annulations

Rhodium(III)-Catalyzed Synthesis of 1,4-Dihydroisoquinolin-3(2H)-ones

Rhodium(III)-Catalyzed Synthesis of 1,4-Dihydroisoquinolin-3(2H)-ones

Indolines by Rhodium(III)-Catalyzed Annulation of 2-Alkenylanilides with Alkynes

Indolines by Rhodium(III)-Catalyzed Annulation of 2-Alkenylanilides with Alkynes

Rhodium(III)-Catalyzed C–H Activation Towards Polyarylated Naphthols

Rhodium(III)-Catalyzed C–H Activation Towards Polyarylated Naphthols

Organic Synthesis Reaction Involved by Aryl-Triazene As an Arylation Reagent

The aryl-triazene, as an extremely useful and versatile organic synthesis midbody, can be extracted from the aromatic amines in a simple way. This paper mainly describes the arylation reaction between palladium catalysis aryl-triazene and indole and azole compounds; the cyclization reaction between rhodium catalysis aryl-triazene and N-methoxybenzamide; while we also design a cross-coupling reaction of palladium catalysis aryl-triazene with indole, and filter catalysts, solvents and additives to contribute the best experiment conditions and a good harvest in the end. The results deduced in the paper show that aryl-triazene attributes to a useful organic synthesis midbody which actively involves in coupled reaction with indole-2.

Selective Functionalization of Aromatic C(sp2)−H Bonds in the Presence of Benzylic C(sp3)−H Bonds by Electron‐Deficient Carbenoids Generated from 4‐Acyl‐1‐Sulfonyl‐1,2,3‐Triazoles

A rhodium(II)-catalyzed reaction of newly prepared 4-acyl-1-sulfonyl-1,2,3-triazoles with benzene, and its derivatives, is investigated. Acceptor/acceptor carbenoids generated from 4-acyltriazoles undergo selective insertion at aromatic C(sp2 )-H bonds in the presence of benzylic C(sp3 )-H bonds to produce N-sulfonylenaminones.

Rhodium(III)-Catalyzed Indoline C–H Alkylation with Enones

Key words indolines - rhodium catalysis - C–H alkylation - Michael addition

Base‐Controlled Completely Selective Linear or Branched Rhodium(I)‐Catalyzed C−H ortho‐Alkylation of Azines without Preactivation

AbstractA [RhI]/bisphosphine/base catalytic system for the ortho‐selective C−H alkylation of azines by acrylates and acrylamides is reported. This catalytic system features an unprecedented complete linear or branched selectivity that is solely dependent on the catalytic base that is used. Complete branched selectivity is even achieved for ethyl methacrylate, which enables the introduction of a quaternary carbon center. Excellent functional group compatibility is demonstrated for both linear and branched alkylations. The operational simplicity and broad scope of this transformation allow for rapid access to functionalized azines of direct pharmaceutical and agrochemical relevance.

Enantioselective Rhodium(II)-Catalyzed [3+2] Annulation

Enantioselective Rhodium(II)-Catalyzed [3+2] Annulation

Rhodium(III)-Catalyzed C–H Activation Route to 1H-Isoindoles

Rhodium(III)-Catalyzed C–H Activation Route to 1H-Isoindoles

Indicators of rhodium powder electrochlorination technology

Indicators of rhodium powder electrochlorination technology

Inside Cover: Rhodium(III)‐Catalyzed Tandem [2+2+2] Annulation–Lactamization of Anilides with Two Alkynoates via Cleavage of Two Adjacent C−H or C−H/C−O bonds (Chem. Asian J. 16/2016)

Inside Cover: Rhodium(III)‐Catalyzed Tandem [2+2+2] Annulation–Lactamization of Anilides with Two Alkynoates via Cleavage of Two Adjacent C−H or C−H/C−O bonds (Chem. Asian J. 16/2016)

Rapid Distinguishing between Rhodium and Palladium in Highly Contaminated Waters Using Amperometry

Rapid Distinguishing between Rhodium and Palladium in Highly Contaminated Waters Using Amperometry

ChemInform Abstract: Divergent Synthesis of Indole‐Fused Polycycles via Rh(II)‐Catalyzed Intramolecular [3 + 2] Cycloaddition and C—H Functionalization of Indolyltriazoles.

AbstractA novel and efficient rhodium catalyzed Intramolecular [3 + 2] cycloaddition and C—H functionalization of indolyltriazoles to give access to polycyclic pyrroloindoles and azepino[4,5‐b]indoles is presented.