55895-98-2Relevant academic research and scientific papers
Palladacycle-Catalyzed Carbonylative Suzuki-Miyaura Coupling with High Turnover Number and Turnover Frequency
Gautam, Prashant,Bhanage, Bhalchandra M.
, p. 7810 - 7815 (2015)
This work reports the carbonylative Suzuki-Miyaura coupling of aryl iodides catalyzed by palladacycles. More importantly, the palladacycles have been used to generate high turnover numbers (TON's) and turnover frequencies (TOF's). A range of aryl iodides can be coupled with arylboronic acids, generating TON's in the range of 106 to 107 and TOF's in the range of 105 to 106 h-1. Comparison of the palladacycles with a conventional palladium source shows their superiority in generating high TON's and TOF's.
KCC-1 supported palladium nanoparticles as an efficient and sustainable nanocatalyst for carbonylative Suzuki-Miyaura cross-coupling
Gautam, Prashant,Dhiman, Mahak,Polshettiwar, Vivek,Bhanage, Bhalchandra M.
supporting information, p. 5890 - 5899 (2016/11/06)
This work reports a cost-effective and sustainable protocol for the carbonylative Suzuki-Miyaura cross-coupling reaction catalyzed by palladium nanoparticles (Pd NPs) supported on fibrous nanosilica (KCC-1). Under mild reaction conditions, the KCC-1-PEI/Pd catalytic system showed a turnover number (TON) 28-times and a turnover frequency (TOF) 51-times higher than the best supported Pd catalyst reported in the literature for the carbonylative cross-coupling between 4-iodoanisole and phenylboronic acid, as a test reaction. Also, the catalyst could be recycled up to ten times with a marginal loss in activity after the eighth cycle. The high activity of the catalyst can be attributed to the fibrous nature of the KCC-1 support and PEI functionalization provided the enhanced stability.
New synthesis of biaryls via Rh-catalyzed decarbonylative Suzuki-coupling of carboxylic anhydrides with arylboroxines
Goossen,Paetzold
, p. 1665 - 1668 (2007/10/03)
The catalytic cross-coupling of aromatic carboxylic anhydrides or acid chlorides with triarylboroxines has been achieved for the first time under decarbonylation, giving rise to the unsymmetrical biaryls rather than the expected diaryl ketones. This new decarbonylative Suzuki coupling, catalyzed by a [Rh(ethylene)2Cl]2/KF system, can be applied to aromatic, heteroaromatic and vinylic carboxylic anhydrides, potentially opening up new perspectives for the use of carboxylic acid derivatives as substrates in biaryl syntheses.
