13141-45-2Relevant academic research and scientific papers
Catalytic and stoichiometric cumulene formation within dimeric group 2 acetylides
Arrowsmith, Merle,Crimmin, Mark R.,Hill, Michael S.,Lomas, Sarah L.,MacDougall, Dugald J.,Mahon, Mary F.
, p. 4961 - 4972 (2013)
A series of β-diketiminate-supported magnesium and calcium acetylide complexes have been synthesized by σ-bond metathesis of magnesium n-butyl or magnesium and calcium amido precursors and a range of terminal acetylenes. The dimeric complexes have been ch
Rare-earth silylamide-catalyzed selective dimerization of terminal alkynes and subsequent hydrophosphination in one pot
Komeyama, Kimihiro,Kawabata, Tomonori,Takehira, Katsuomi,Takaki, Ken
, p. 7260 - 7266 (2005)
Rare-earth silylamides, Ln[N(SiMe3)2]3 (Ln = Y, La, Sm), catalyzed regio- and stereoselective dimerization of terminal alkynes in the presence of amine additives to give conjugated enynes in high yields. The additives play
Ruthenium catalyzed homocoupling of terminal alkynes
Slugovc, Christian,Doberer, Daniel,Gemel, Christian,Schmid, Roland,Kirchner, Karl,Winkler, Berthold,Stelzer, Franz
, p. 221 - 233 (1998)
Several complexes of the type RuTp(L)(L′)Cl (L, L′ = P, N, O donors) were tested with respect to their ability of promoting catalytic C-C-coupling reactions of terminal acetylenes. When L = tertiary phosphine, predominantly dimerization occurs, RuTp(PPhs
Regio-and stereoselective homodimerization of monosubstituted acetylenes in the presence of the second generation grubbs catalyst
Powa?a, Beata,Pietraszuk, Cezary
, p. 413 - 418 (2014)
Silyl-and phenylacetylenes undergo efficient homodimerization in the presence of a second generation Grubbs catalyst. The reaction permits fully regio-and stereoselective synthesis of disubstituted 1,3-enynes. The other commonly used ruthenium-based olefi
Selective Linear Codimerization of Acetylenes and Buta-1,3-diene Catalysed by Dihydridotetrakistrialkylphosphineruthenium Complexes
Mitsudo, Take-aki,Nakagawa, Yoshiteru,Watanabe, Hiroyoshi,Watanabe, Katsuya,Misawa, Hideto,Watanabe, Yoshihisa
, p. 496 - 497 (1981)
Selective linear codimerization of terminal acetylenes and buta-1,3-diene catalysed by the first example of a dihydridotetrakis(trialkylphosphine)ruthenium complex is reported.
Novel regio- and stereoselective dimerization of terminal alkynes catalyzed by rare-earth silylamide
Komeyama, Kimihiro,Takehira, Katsuomi,Takaki, Ken
, p. 1062 - 1066 (2004)
Rare-earth silylamide complex, Y[N(SiMe3)2] 3, was found to exhibit good catalyst activities for regio- and stereoselective dimerization of terminal aliphatic and aromatic alkynes in the presence of amine additives. Thus,
Diphenylphosphorylated PEG (DPPPEG) as a new support for generation of nano-Pd(0) as catalyst for carbon-carbon bond formation via copper-free Sonogashira and homocoupling reactions of aryl halides in PEG
Iranpoor, Nasser,Firouzabadi, Habib,Riazi, Asma
, p. 155 - 165 (2015)
In this study, synthesis and application of diphenylphosphorylated PEG200 (DPPPEG200) are described. Herein, we report a very simple procedure for the preparation of DPPPEG200 as a stable solid through the reaction of PEG200 with ClPPh2. This compound was used as a very suitable ligand for the in situ generation of nano-Pd(0) particles through its reaction with PdCl2 as a pre-catalyst. Isolation of this catalyst is very simple through addition of diethyl ether to the reaction mixture and centrifugations. Full characterization of the nano-Pd(0)/DPPPEG200 was performed by XRD spectra, UV-Vis spectra, and also by TEM image. This nano-complex was used as an efficient catalyst for copper-free Sonogashira and homocoupling reactions of aryl halides. The sonogashira reaction of aryl halides was conducted at 80 °C in PEG. However, the homocoupling reaction was performed at 100 °C for aryl iodides and activated aryl bromides and at 130 °C for deactivated aryl bromides and aryl chlorides in PEG. The catalyst was recovered and recycled for four consecutive runs.
Selective dimerization of arylalkynes to (E)-1,4-diaryl enynes catalyzed by the [Ru(p-cymene)Cl2]2/acetic acid system under phosphine-free conditions
Bassetti, Mauro,Pasquini, Chiara,Raneri, Antonino,Rosato, Deborah
, p. 4558 - 4561 (2007)
(Chemical Equation Presented) The commercially available di-μ-chlorobis[(p-cymene)chlororuthenium(II)] complex catalyzes the dimerization of aromatic alkynes in acetic acid at room temperature to form the corresponding (E)-1,4-diarylbut-1-ene-3-yne derivatives, with high stereoselectivity. The procedure does not require the use of additives and can be carried out in the presence of water or aprotic cosolvents, under homogeneous conditions.
Coupling of butyl vinyl tellurides with metal acetylides catalyzed by nickel complexes
Raminelli, Cristiano,Gargalaka Jr., Jo?o,Silveira, Cláudio C.,Comasseto, Jo?o V.
, p. 4927 - 4930 (2004)
Z-Vinylic tellurides react with metal acetylides under nickel complexes catalysis to give Z-enynes and Z-enediynes in good yields.
Bulky Diphosphine Acetate Ruthenium Complexes: Synthesis and Catalytic Activity in Ketone Transfer Hydrogenation and Alkyne Dimerization
Ballico, Maurizio,Zuccaccia, Daniele,Figliolia, Rosario,Baratta, Walter
, p. 3180 - 3193 (2020)
Several mononuclear ruthenium complexes containing bulky diphosphines have been easily prepared from acetate ruthenium precursors. The cyclohexyl complex [Ru(n 2-OAc)2(DCyPF)] (1-cy; DCyPF = 1,1′-bis(dicyclohexylphosphino)ferrocene) is synthesized from [R
