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

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

Multi-applications of new trinuclear Zr-SMI complex

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

Key words indazoles - rhodium catalysis - azobenzenes - paraformaldehyde

Key words rhodium(III) catalysis - C–H activation - cationic polycyclic heteroaromatics

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

Key words alkenylnosylanilides - alkynes - rhodium catalysis - C–H activation - allylic amination - indolines

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

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.

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.

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

Abstract A [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

Key words aryl ketones - benzylamines - C–H activation - annulation - rhodium catalysis - isoindoles

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)

Abstract A 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.

The inside front cover picture provided by Yoshihiro Oonishi, Yoshio Hato, and Yoshihiro Sato, illustrates a rhodium-catalyzed [2+2+2] cycloaddition reaction involving CN double bonds such as imines. The reaction has a diverging point, which is a strained azarhodacycle intermediate. Thus, the reaction proceeds through the common intermediate, giving two different types of cyclized products (i.e., 5,7-fused cyclic amides via β-elimination or 8-azabicyclo[3.2.1]octane derivatives via reductive elimination). The picture shows an outline of this cyclization by using an illustration of a Y-junction on a freeway. Details can be found in the communication on pages 3033–3039 (Y. Oonishi, Y. Hato, Y. Sato, Adv. Synth. Catal.­ 2015, 357, 3033–3039; DOI: 10.1002/adsc.201500417).