1591-44-2Relevant academic research and scientific papers
Carbomylative Suzuki-Miyaura coupling of arylboronic acids with aryl iodides catalyzed by the MCM-41-supported bidentate phosphane palladium(II) complex
Cai, Mingzhong,Zheng, Guomin,Zha, Lingfang,Peng, Jian
, p. 1585 - 1591 (2009)
The first heterogeneous carbonylative Suzuki-Miyaura cross-coupling reaction of arylboronic acids with aryl iodides under an atmospheric pressure of carbon monoxide has been achieved in anisole at, 80 °C in the presence of a catalytic amount of an MCM-41-supported bidentate phosphane palladium(II) complex (MCM-41-2P-PdII), yielding unsymmetrical biaryl ketones in good-to-high yields. This polymeric palladium catalyst exhibited higher activity and selectivity than fPdCl2(PPh3)2] and can be reused at least 10 times without any decrease in activity. Wiley-VCH Verlag GmbH & Co, KGaA.
Chloro-ruthenium complexes with carbonyl and N-(aryl)pyridine-2-aldimines as ancillary ligands. Synthesis, characterization and catalytic application in C-C cross-coupling of arylaldehydes with arylboronic acids
Dey, Bikash Kali,Dutta, Jayita,Drew, Michael G.B.,Bhattacharya, Samaresh
, p. 176 - 184 (2014/01/06)
Reaction of N-(aryl)pyridine-2-aldimines (L-R, R = OCH3, CH 3, H, Cl and NO2) with [Ru(CO)2Cl 2]n in refluxing ethanol affords a group of complexes of type [Ru(L-R)(CO)2Cl2]. In these complexes the diimine ligands (L-R) are coordinated to the metal center as NN-donors forming five-membered chelate rings, the carbonyls are mutually cis and the two chlorides are trans. Crystal structure of [Ru(L-OCH3)(CO) 2Cl2] has been determined. All the complexes show characteristic 1H NMR signals, and in dichloromethane solution they display intense absorptions in the visible and ultraviolet regions. Cyclic voltammetry on the complexes shows an irreversible oxidation of the metal center within 1.15-1.23 V vs SCE, and reduction(s) of the diimine ligand within -0.70 to -0.96 V vs SCE. The [Ru(L-R)(CO)2Cl2] complexes efficiently catalyze cross-coupling of arylaldehydes with arylboronic acids yielding diaryl ketones.
Gold-catalyzed reactions of enynals/enynones with norbornenes: Generation and trapping of cyclic o-quinodimethanes (o-QDMs)
Zhu, Shifa,Zhang, Zhicai,Huang, Xiaobing,Jiang, Huanfeng,Guo, Zhengjiang
supporting information, p. 4695 - 4700 (2013/05/09)
Fan-like structures: An efficient AuIII-catalyzed method to generate the highly reactive cyclic o-quinodimethane (o-QDM) species from easily available enynals or enynones is presented (see scheme). This method produced a variety of structurally unique fan-like products with the advantages of mild reaction conditions, excellent diastereoselectivities, and high functional-group tolerance. Copyright
The first heterogeneous carbonylative Stille coupling of organostannanes with aryl iodides catalyzed by MCM-41-supported bidentate phosphine palladium(0) complex
Cai, Mingzhong,Zheng, Guomin,Ding, Guodong
experimental part, p. 1687 - 1693 (2010/06/11)
The first heterogeneous carbonylative Stille coupling reaction of organostannanes with aryl iodides under an atmospheric pressure of carbon monoxide has been achieved in DMF at 80 °C in the presence of a catalytic amount of an MCM-41-supported bidentate phosphine palladium(0) complex [MCM-41-2P-Pd(0)], yielding a variety of unsymmetrical ketones in good to high yields. This polymeric palladium catalyst exhibited higher activity and selectivity than PdCl2(PPh3)2 and can be recovered and recycled by a simple filtration of the reaction solution and used for at least 10 consecutive trials without any decrease in activity. Our system not only avoids the use of carbon monoxide under pressure, but also solves the basic problem of palladium catalyst recovery and reuse. The Royal Society of Chemistry 2009.
