58566-19-1Relevant academic research and scientific papers
Synthesis and characterization of Pd(II) and Ru(II) complexes of tetradentate N,N,N,N-(Diphosphinomethyl)amine ligands: Catalytic properties in transfer hydrogenation and heck coupling reactions
Akkaya, Seda K??ker,Kele?, Mustafa,Uru?, Serhan
, (2020/07/13)
– Tetradentate N,N,N,N-(diphosphinomethyl)amine ligands and their Pd(II) and Ru(II) complexes were synthesized under a nitrogen atmosphere using Schlenk technique. The synthesized ligands and the complexes were characterized with 1H- and 31P-NMR, FT-IR, TG/DTA, and elemental analysis techniques. Pd(II) Complexes were used as catalysts in Heck coupling reactions and Ru(II) complexes were tried in transfer hydrogenation reactions of acetophenone derivatives. According to the results, L4-Pd(II) complex showed the best catalytic activity in the Heck coupling reaction of p-methylbromobenzene with o-chlorostyrene. It was confirmed that the reduction of bromo and chloroacetophenones in all catalysts the conversions were higher. The results showed that Ru(II) complexes as efficient catalysts and up to 99percent conversions was occurred with bromo and chloro acetophenones in K2CO3/isopropyl alcohol media at 80 °C.
Immobilized Pd on (S)-methyl histidinate-modified multi-walled carbon nanotubes: A powerful and recyclable catalyst for Mizoroki-Heck and Suzuki-Miyaura C-C cross-coupling reactions in green solvents and under mild conditions
Hajipour, Abdol R.,Khorsandi, Zahra
, p. 256 - 261 (2016/05/02)
A stable and powerful heterogeneous palladium catalyst was synthesized using immobilized palladium on (S)-methyl histidinate bonded onto the surface of multi-walled carbon nanotubes. The catalyst was characterized using a combination of Fourier transform infrared and X-ray photoelectron spectroscopies, transmission electron microscopy, X-ray powder diffraction and inductively coupled plasma, thermogravimetric and elemental analyses. This new air- and moisture-stable phosphine-free palladium catalyst was found to be highly active and reusable in Mizoroki-Heck and Suzuki-Miyaura cross-coupling reactions in poly(ethylene glycol) and aqueous ethanol as green solvents using an extremely small amount of palladium under mild conditions.
Iminophosphine palladium(II) complexes: Synthesis, characterization, and application in Heck cross-coupling reaction of aryl bromides
Yilmaz, Mustafa Kemal,Guezel, Bilgehan
, p. 529 - 536 (2014/07/07)
Palladium(II) complexes containing phosphorus and nitrogen donor atoms (iminophosphine), dichlorido{N-[2-(diphenylphosphino)benzylidene]-2- trifluoromethylaniline}palladium(II) 1, dichlorido{N-[2-(diphenylphosphino) benzylidene]-3-trifluoromethylaniline}palladium(II) 2, dichlorido{N-[2- (diphenylphosphino)benzylidene]-2-methylaniline}palladium(II) 3, dichlorido{N-[2-(diphenylphosphino)benzylidene]-3-methylaniline}palladium(II) 4 have been successfully synthesized and fully characterized by FT-IR and NMR (1H, 31P, 19F, and 13C) spectroscopy techniques. These complexes were first step tested in the reaction of bromobenzene and styrene to determine the optimal coupling reaction conditions and then successfully applied as catalysts for Heck cross-coupling reactions of activated and deactivated aryl bromides with styrene derivatives and several acrylates. Copyright
Synthesis and calcium antagonistic activity of diethyl styrylbenzylphosphonates
Younes, S.,Tchani, G.,Baziard-Mouysset, G.,Stigliani, J. L.,Payard, M.,et al.
, p. 87 - 94 (2007/10/02)
Twenty-three new phosphonic ester derivatives of stilbene exhibiting structural analogies with fostedil are described.Examination of calcium antagonism showed that this activity could not be increased by introducing electron-withdrawing, electronreleasing
