1129-65-3Relevant articles and documents
The Sonogashira Reaction in Ionic Liquids
Kmentova, Iveta,Gotov, Battsengel,Gajda, Vladimir,Toma, Stefan
, p. 545 - 549 (2003)
The Sonogashira reaction of iodobenzene with phenylacetylene in several room temperature ionic liquids was studied. A regeneration of the catalytical system immobilized in 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim]PF6) has been als
Copper-catalyzed coupling reaction of terminal alkynes with aryl- and alkenyliodonium salts
Kang, Suk-Ku,Yoon, Seok-Keun,Kim, Young-Mook
, p. 2697 - 2699 (2001)
(Equation presented) The copper iodide-catalyzed cross-coupling of terminal alkynes with hypervalent iodonium salts was accomplished with Cul (10 mol %) and NaHCO3 (2 equiv) in DME/H2O (4:1) at room temperature for 30 min to afford arylalkynes or enynes under mild conditions.
Electrochemical Reduction and Intramolecular Cyclization of 6-Iodo-1-phenyl-1-hexyne at Vitreous Carbon Cathodes in Dimethylformamide
Mubarak, Mohammad S.,Nguyen, Dung D.,Peters, Dennis G.
, p. 2648 - 2652 (1990)
In dimethylformamide containing a tetraalkylammonium perchlorate, a cyclic voltammogram for reduction of 6-iodo-1-phenyl-1-hexyne at a glassy carbon electrode exhibits three prominent waves corresponding to cleavage of the carbon-iodine bond and to subsequent reductions of 1-phenyl-1-hexyne and benzylidenecyclopentane.At potentials for which only reduction of the carbn-iodine bond occurs, large-scale electrolytes of 6-iodo-1-phenyl-1-hexyne afford benzylidenecyclopentanone and 1-phenyl-1-hexyne; the yield of the carbocycle, averaging 36percent, is insensitive to potential, but the quantity of 1-phenyl-1-hexyne varies from 28 to 48percent as the potential is chosen to be more negative.In the presence of diethyl malonate as a proton donor, the quantity of benzylidenecyclopentane changes little, the yield of 1-phenyl-1-hexyne decreases, and substantial (>33percent) diethyl (1-phenyl-1-hexyn-6-yl)malonate is obtained.With 1,1,1,3,3,3-hexafluoroisopropyl alcohol as proton source, the yield of benzylidenecyclopentane increases to approximately 60percent, whereas the quantity of 1-phenyl-1-hexyne decreases somewhat.It appears that each of the major hydrocarbon products is formed via a combination of one- and two-electron processes.
A convenient high activity catalyst for the Sonogashira coupling of aryl bromides
Koellhofer, Axel,Plenio, Herbert
, p. 1295 - 1300 (2005)
A mixture of Na2PdCl4, CuI and (t-Bu) 3PH+BF4- (molar ratio 4:3:8) dispersed in H2N(i-Pr)2 Br can be used as a "single source" precatalyst for the Sonogashira coupling of aryl bromides with various aryl- and alkylacetylenes in HN(i-Pr)2 solvent. Arylacetylenes require just 0.005 mol % of Pd catalyst at 80°C, with TOFs ranging between 3,200 and 10,000 h-1.
Efficient coupling reactions of lithium alkynyl(triisopropoxy)borates with aryl halides: Application to the antifungal terbinafine synthesis
Chang Ho Oh,Seung Hyun Jung
, p. 8513 - 8516 (2000)
Thermally stable lithium alkynyl(triisopropoxy)borates were reacted with several aryl halides in the presence of palladium catalysts to give the corresponding cross-coupling products in excellent yields. The present methodology has been successfully appli
A copper-free Sonogashira reaction using nickel ferrite as catalyst in water
Moghaddam, Firouz Matloubi,Tavakoli, Ghazal,Rezvani, Hamid Reza
, p. 82 - 87 (2015)
The Sonogashira reaction using nickel ferrite nanoparticles as catalyst and under copper-free conditions was investigated in water as a green solvent. Various types of aryl and alkyl halides were successfully coupled with phenyl acetylene under the optimized reaction conditions with very good to excellent yields at a short time. The catalyst is easily recoverable and can be reused for several runs with a good turnover number.
A novel method of C-C bond formation via phenylation of terminal acetylenes by triphenylbismuth difluoride
Lermontov, Sergei A.,Rakov, Igor M.,Zefirov, Nikolai S.,Stang, Peter J.
, p. 4051 - 4054 (1996)
Terminal acetylenes readily undergo phenylation by Ph3BiF2 in the presence of catalytic amounts of CuCl affording phenyl substituted acetylenes.
Rhodium-catalyzed synthesis of indenols by regioselective coupling of alkynes with ortho-carbonylated arylboronic acids
Shintani, Ryo,Okamoto, Kazuhiro,Hayashi, Tamio
, p. 1294 - 1295 (2005)
A rhodium/diene-catalyzed regioselective synthesis of indenols has been developed through the coupling of alkynes with ortho-carbonylated arylboronic acids. These reactions proceed under mild conditions in uniformly high yield and regioselectivity. The re
Palladium-catalyzed R(sp3)-Zn/R(sp)-SnBu3 oxidative cross-coupling
Jin, Liqun,Zhao, Yingsheng,Wang, Haibo,Lei, Aiwen
, p. 649 - 654 (2008)
A novel bond formation through oxidative cross-coupling with desyl chloride as the oxidant has been investigated. The coupling can be carried out under mild conditions. The Csp3-center carbon was involved even in the presence of a β-H, and up to 90% of the desired cross-coupling product was obtained with the secondary Csp3-center substrate. Georg Thieme Verlag Stuttgart.
Organic functionalization of mesopore walls in hierarchically porous zeolites
Lee, Dong-Hwan,Choi, Minkee,Yu, Byung-Woo,Ryoo, Ryong
, p. 74 - 76 (2009)
Mesopore walls of hierarchically meso-/microporous zeolites (MFI, BEA and LTA) are covered with silanol groups, so that the zeolites can be functionalized with various organic groups via silylation; the organic-functionalized hierarchical zeolites exhibit