Remarks on the process of homogeneous carbonylation of rhodium compounds by N,N-dimethylformamide

Rhodium-Catalyzed Cross-Coupling Reactions of Carboxylate and Organoboron Compounds via Chelation-Assisted C–C Bond Activation

“…To gain a better understanding of the catalytic mechanism, DFT calculations were carried out using the B3LYP hybrid functional . The computed route of the model reaction between a simplified methyl benzo[ h ]quinoline-10-carboxylate and RhCl(PH 3 ) 3 is shown in Figure .…”

“…An absorption peak at 1978 cm –1 appeared at the start of the reaction and slowly increased during the reaction process, indicating the formation of metal carbonyl complexes. Furthermore, after the completion of the catalytic reaction, carbonyl rhodium complex (Ph 3 P) 2 Rh(CO)Cl ( 4 ), a known complex, was isolated and identified by single-crystal X-ray diffraction (see Supporting Information for details). When 4 was used by itself as the catalyst for the decarbonyl coupling reaction of 1a and phenylboronic acid under reaction conditions similar to those for (PPh 3 ) 3 RhCl, the desired product was isolated in 38% yield.…”

First examples of [Rh(Bident)(CO)(L)] complexes where L is N-donor ligand: Molecular structure of [Rh(8-Oxiquinolinato)(CO)(NH3)]

“…The product was identified by IR and 13 C NMR as [Rh(Oxq)(CO) 2 ]. IR (CHCl 3 ): 2084 and 2010 cm À1 [25,26]. The 13 C-enriched complex was prepared by the same way using [Rh(Acac)( 13 CO) 2 ].…”

Half-Open Hollow Cages of Pentadecavanadate and Hexadecavanadate Compounds with Large -O−V−O−V- Windows

“…The result proves the existence of the dimethylammonium cations. This phenomenon is not without precedence, , and, according to the literature, − it is considered that these dimethylammonium cations might be generated through the decarbonylation of DMF in the acidic circumstance (Scheme ). The main difference of the decarbonylation between their cases and ours is that the former only occurred upon heating or refluxing while the latter significantly took place at room temperature, where the vanadium(IV/V) intermediate in the reaction system may as the catalyst play an important role .…”