A general rhodium-catalyzed oxidative coupling reaction between internal alkynes and aryl aldimines is described. This process affords 3,4-disubstituted isoquinolines in good yield and high regioselectivity. Preliminary mechanistic studies suggest that the C-N bond formation arises from the reductive elimination of a rhodium(III) species.

Complexes of novel alkyne-chelating tridentate ligands bound to a rhodium atom were isolated and characterised. The present alkyne-rhodium complex underwent dimerisation simply by heating to afford the unprecedented cyclobutadiene dirhodium complex. It is also found that the ligands at the trans positions influence the π-coordination of alkynes.

The reactivity of the novel family of metalloporphyrin dimers containing a Rh-In bond towards alkyl halides is presented. The chemical reactivity of the homoleptic (same porphyrin ligand) and heteroleptic (different porphyrin ligand) porphyrin complexes with Rh-In metal-metal bond has been examined by photoand thermal-processes in the presence of alkyl halides under anaerobic conditions in the ...

A rhodium(III)-based catalytic system has been used to develop a C−H bond activation of benzaldehyde derivatives and subsequent functionalization with dioxazolones in order afford imides. The importance the nature directing group perform selectively aldehydic highlighted. scope investigation showed that this transformation could be applied various many as well an acrolein derivative. Derivatiza...

Abstract Herein, we report on the rhodium‐catalyzed reaction of triazoles with acyl selenides. Under thermal conditions and in presence a rhodium catalyst, rapid 1,3‐difunctionalization occurs to provide valuable α‐seleno enamides high stereoselectivity broad functional group tolerance, which was demonstrated 35 examples up 95% yield. Computational calculations suggest pathway that gives direct...

The electrochemical behavior of rhodium at low-temperature carbamide-chloride and acetamide-chloride melts was investigated. It was found that, during rhodium anodic dissolution in carbamide and acetamide containing chloride melts, mixed complexes [Rh(NH3)4Cl2]+ of quasi-octahedral symmetry D4h are produced. The composition and structure of nascent complex ions have been studied. During electro...

The development of a rhodium catalyst for endo- and enantioselective hydroacylation of ortho-allylbenzaldehydes is reported. A catalyst generated in situ from [Rh(COD)Cl]2, (R)-DTBM-SEGPHOS, and NaBARF promotes the desired hydroacylation reactions and minimizes the formation of byproducts from competitive alkene isomerization and ene/dehydration pathways. These rhodium-catalyzed processes gener...

Attempts to utilize the compound ethylenediphosphine as a ligand bonded to the metal rhodium were made with a view towards the synthesis of complexes useful for kinetic studies. The desired Rh(III) complexes were not produced. Instead a Rh(I) complex was postulated to have been formed. A general review of rhodium-phosphorus chemistry is given as well as some suggestions for possible synthetic r...

The rhodium-catalyzed methylation of ketones has been accomplished using methanol as the methylating agent and the hydrogen-borrowing method. The sequence is notable for the relatively low temperatures that are required and for the ability of the reaction system to form α-branched products with ease. Doubly alkylated ketones can be prepared from methyl ketones and two different alcohols by usin...