研究者詳細 - 西原　康師

論文 - 西原　康師

分割表示 197 件中 141 - 160 件目／全件表示 >>

Diarylpalladium complexes with a cis structure. Formation via transmetalation of arylboronic acids with an aryliodopalladium complex and intramolecular coupling of the aryl ligands, affording unsymmetrical biaryls

K Osakada, H Onodera, Y Nishihara

ORGANOMETALLICS 24 ( 2 ) 190 - 192 2005年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER CHEMICAL SOC

(2,4,6-Trifluorophenyl)- and (2,6-difluorophenyl)boronic acids react with PdI(C6H4O4-Me)(tmen) (tmen = N,N,N',N'-tetramethylethylenediamine) in the presence of Ag2O to produce cis-diarylpalladium complexes with a tmen ligand via intermolecular transfer of the fluorophenyl group from B to Pd. The isolated complexes undergo coupling of the two aryl ligands upon heating the solution to 45-60 degreesC to afford unsymmetrical biaryls.

DOI： 10.1021/om049217i

C-C and C-H bond activation of dialkylmethylenecyclopropane promoted by rhodium and iridium complexes. Preparation and structures of M(eta(1):eta(2)-CH2CR2CH=CH2)(CO)(PPh3)(2) and trans-M(CH=CHCMeR2)(CO)(PPh3)(2) (M = Rh, Ir, R = CH2CH2Ph)

M Itazaki, C Yoda, Y Nishihara, K Osakada

ORGANOMETALLICS 23 ( 23 ) 5402 - 5409 2004年11月

記述言語：英語出版者・発行元：AMER CHEMICAL SOC

2,2-Bis(2-phenylethyl)-1-methylenecyclopropane reacts with RhH(CO)(PPh3)(3) at room temperature and with IrH(CO)(PPh3)(3) at 70 degreesC to form the 3-butenyl complexes of these metals, M{eta(1):eta(2)-CH2C(CH2CH2Ph)(2)CH=CH2}(CO)(PPh3)(2) (1, M = Rh; 2, M = Ir). Heating 1 at 55 degreesC liberates 1,1-bis(2-phenylethyl)-1,3-butadiene, while the thermal reaction of 2 at 110 degreesC forms a mixture of 3-methyl-3-vinyl-1,5-diphenyl-1-pentene (48% NMR yield) and 3-methyl-3-vinyl-1,5-diphenylpentane (15% NMR yield). The reactions of excess amounts of 2,2-bis(2-phenylethyl)-1-methylenecyclopropane with RhH(CO)(PPh3)(3) at 55 degreesC and with IrH(CO)(PPh3)(3) at 115 degreesC afford the alkenyl complexes trans-Rh{(Z)-CH=CHC(CH2CH2Ph)(2)CH3}-(CO)(PPh3)(2) (3) and trans-Ir{(E)-CH=CHC(CH2CH2Ph)(2)CH3}(CO)(PPh3)(2) (4), respectively. The reaction mechanisms are discussed on the basis of the results of the reactions under different conditions. HCequivalent toCC(CH2CH2Ph)(2)CH3 reacts with MH(CO)(PPh3)(3) (M = Rh, Ir) to afford the alkynyl complexes trans-M{Cequivalent toCC(CH2CH2Ph)(2)CH3}(CO)(PPh3)(2) (5, M = Rh; 6, M = Ir) via oxidative addition of the C(alkyne)-H bond to the metal center and subsequent elimination of H-2.

DOI： 10.1021/om049632a

Cationic Rh complexes with novel spiro tetraarylpentaborate anions prepared from arylboronic acids and aryloxorhodium complexes

Y Nishihara, K Nara, Y Nishide, K Osakada

DALTON TRANSACTIONS ( 9 ) 1366 - 1375 2004年5月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ROYAL SOC CHEMISTRY

Ar-B(OH)(2) (1a: Ar = C6H4OMe-4, 1b: Ar = C6H3Me2-2,6) react immediately with Rh(OC6H4Me-4)(PMe3)(3) (2) in 5 : 1 molar ratio at room temperature to generate [Rh(PMe3)(4)](+)[B5O6Ar4](-) (3a: Ar C6H4OMe-4, 3b: Ar = C6H3Me2- 2,6). p-Cresol (92%/Rh), anisole (80%/Rh) and H2O (364%/Rh) are formed from 1a and 2. The reaction of 1a with 2 for 24 h produces [Rh(PMe3)(4)](+)[B5O6(OH)(4)](-) (4) as a yellow solid. This is attributed to hydrolytic dearylation of once formed 3a because the direct reaction of 3a with excess H2O forms 4. An equimolar reaction of 2 with phenylboroxine (PhBO)(3) causes transfer of the 4-methylphenoxo ligand from rhodium to boron to produce [Rh(PMe3)(4)](+) [B3O3Ph3(OC6H4Me-4)](-) (5). Arylboronic acids 1a and 1b react with Rh(OC6H4Me-4)(PR3)(3) (6: R = Et, 8: R = Ph) and with Rh(OC6Me-4)(cod)(PR3) (11: R = Pr-i, 12: R = Ph) to form [Rh(PR3)(4)](+)[B5O6Ar4](-) (7a: R = Et, Ar = C6H4OMe-4, 7b: R = Et, Ar = C6H3Me2-2,6, 9a: R = Ph, Ar = C6H3Me2-2,6) and [Rh(cod)(PR3)(L)](+)[B5O6Ar4](-) (13b: R = Pr-i, L = acetone, Ar = C6H3Me2-2,6,14a: R = Ph L = PPh3, Ar = C6H4OMe-4, 14b: R = Ph, L = PPh3, Ar - C6H3Me2-2,6), respectively. Hydrolysis of 14a yields [Rh(cod)(PPh3)(2)](+)[B5O6(OH)(4)](-) (15) quantitatively.

DOI： 10.1039/b315902g

Stereodivergent syntheses of (Z)- and (E)-alkenylsilanes via hydrosilylation of terminal alkynes catalyzed by rhodium(I) iodide complexes and application to silicon-containing polymer syntheses

A Mori, E Takahisa, Y Yamamura, T Kato, AP Mudalige, H Kajiro, K Hirabayashi, Y Nishihara, T Hiyama

ORGANOMETALLICS 23 ( 8 ) 1755 - 1765 2004年4月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER CHEMICAL SOC

RhI(PPh3)(3) or [RhI(cod)](2) (cod = 1,5-cyclooctadiene) as a catalyst delivers both (Z)- and (E)-alkenylsilanes in the stereodivergent hydrosilylation of terminal alkynes with heteroatom-substituted organosilane reagents. Treatment of the rhodium catalyst and the silane reagent followed by addition of terminal alkyne at room temperature leads to (Z)-silanes, while addition of the silane and the alkyne to the rhodium catalyst in one portion and heating at 60 degreesC affords (E)-silanes highly selectively. The obtained (E)- and (Z)-alkenylsilanes bearing heteroatom substituents on the silicon atom are subjected to the palladium-catalyzed cross-coupling reaction with aryl halides to form a carbon-carbon bond with retention of stereochemistry. The stereodivergent hydrosilylations are applied to the polyaddition with bifunctional alkynes (1,3- and 1,4-diethynylbenzene) and silanes (1,3- or 1,4-bis(dimethyl-silyl)benzene), giving silicon-containing polymers, poly(aryleneethenylenesilylene)s, in highly stereocontrolled manners. A fluorine-containing silicon reagent bearing a 3,3,3-trifluoropropyl group is also subjected to the polymerization, in which [RhI(cod)12 is found to be an efficient catalyst. Measurement of UV-vis absorption/emission spectra and several. thermal analyses of the polymers are also conducted.

DOI： 10.1021/om049922r

Syntheses of Dinuclear and Trinuclear Hydridoplatinum Complexes with Bridging Phosphido Ligands [Pt2H2(m-PR2)2(PEt3)2] (R = tBu, Ph) and [Pt3H2(m-PPh2)4(PEt3)2]. Characterization of the Triangular Intermediate [Pt3H(m-PPh2)3(PEt3)3] and Its Chemical Pr・・・

M. Itazaki, Y. Nishihara, K. Osakada

Organometallics 23 ( 7 ) 1610 - 1621 2004年3月

Synthesis and structural characterization of the first unsymmetrical diarylpalladium complex trans-Pd(C6F5)(2,4,6-C6F3H2)(PEt3)(2), derived from transmetallation between 2,4,6-trifluorophenylboronic acid and trans-Pd(C6F5)I(PEt3)(2)

Y Nishihara, H Onodera, K Osakada

CHEMICAL COMMUNICATIONS ( 2 ) 192 - 193 2004年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ROYAL SOC CHEMISTRY

The reactions of 2,4,6-trifluorophenylboronic acid with aryl(iodo)palladium(II) complexes, trans-Pd(C6F5)I(PR3)(2)(PR3 = PEt3, PMe2Ph, PMePh2) in the presence of Ag2O afforded transPd(C6F5)(2,4,6-C6F3H2)(PR3)(2) which are stabilized by fluorine atoms in the ortho positions.

DOI： 10.1039/b308741g

New stable complexes of Au(III) with biuret: X-ray structure of cis-[Au(Biu)Br-2]PPh4 and Ab initio investigation of cis-[Au(Biu)X-2](-)

N Mintcheva, M Mitewa, Enchev, V, Y Nishihara

JOURNAL OF COORDINATION CHEMISTRY 56 ( 4 ) 299 - 305 2003年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：TAYLOR & FRANCIS LTD

Two anionic complexes of Au(III) with the bioligand biuret, cis-[Au(Biu)X-2](-) (BiuH(2)=biuret, X=Cl, Br), have been synthesized and characterized. The molecular structure of cis-[Au(Biu)Br-2]PPh4 has been determined by X-ray diffraction analysis. The complex anion has square-planar geometry with one deprotonated biuret dianion coordinated bidentately to the metal center via the terminal amino nitrogen atoms and two bromide ions in cis positions. There are no significant intermolecular Au-Au interactions in the solid state. Ab initio calculations of the geometric structure at different computational levels for biuret and both anionic complexes as well an IR study of the structures obtained are performed.

DOI： 10.1080/0095897031000069049

Platinum complex-catalyzed hydrosilylation and isomerization of methylenecyclopropane derivatives. Effect of structures of the substrate and catalyst

M Itazaki, Y Nishihara, K Osakada

JOURNAL OF ORGANIC CHEMISTRY 67 ( 20 ) 6889 - 6895 2002年10月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER CHEMICAL SOC

PtI2(PPh3)(2) catalyzes hydrosilylation of 2,2-diphenyl-1-methylenecyclopropane with HSiEt3, HSiPh3, HSiEt2Ph, HSiPhCl2, and HSiCl3 under solvent-free conditions at 140 degreesC to produce the silyl compounds with a (2,2-diphenyleyclopropyl)methyl substituent in moderate to high yields without ring-opening of the substrate. PtI2(PPh3)(2) is converted by the reaction into PtH(I)(PPh3)(2), which also catalyzes the hydrosilylation of the methylenecyclopropanes. The reaction of 2-phenyl-1-methylenecyclopropane, 2-methyl-2-phenyl-1-methylenecyclopropane, 2,2-diphenethyl-1-methyl-enecyclopropane, and alkylidenecyclopropanes with HSiEt3 catalyzed by PtI2(PPh3)(2) causes addition of hydrosilane to the substrate accompanied by ring-opening. 2,2-Diphenyl-1-methylenecyclopropane undergoes ring-opening isomerization in the presence of HSi(OEt)Me-2 and Pt(PEt3)(3) catalyst to give 1,1-diphenyl-1,3-butadiene. The pathways for the hydrosilylation and the isomerization are discussed.

DOI： 10.1021/jo020293+

Tetraarylpentaborates, [B5O6Ar4](-) (Ar = C6H4OMe-4, C6H3Me2-2,6): Their formation from the reaction of arylboronic acids with an aryloxorhodium complex, structure, and chemical properties

Y Nishihara, K Nara, K Osakada

INORGANIC CHEMISTRY 41 ( 16 ) 4090 - 4092 2002年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER CHEMICAL SOC

The reactions of (4-methoxyphenyl)boronic acid (1a) and of (2,6-dimethylphenyl)boronic acid (1 b) with (PMe3)(3)Rh-(OC6H4Me-4) (2) in a 5:1 molar ratio result in the formation of cationic rhodium complexes with new tetraarylpentaborates [Rh(PMe3)(4)](+)[B5O6Ar4](3a, Ar = C6H4OMe-4; 3b, Ar = C6H3Me2-2,6). The characterization of 3a is as follows: orthorhombic space group P2(1)2(1)2(1), a = 14.7600(5) Angstrom, b =17.1675(5) Angstrom, c = 19.8654(5) Angstrom; V = 5033.7(3) Angstrom(3); Z = 4. The characterization of 3b is as follows: orthorhombic space group Pnma, a = 23.704(6) Angstrom, b = 17.254(8) Angstrom, c = 13.304(2) Angstrom; V = 5441(2) Angstrom(3); Z = 4. An intermediate complex, [Rh(PMe3)(4)](+)[Ph3B3O3(OC6H4Me-4)](-) (4), was isolated from the reaction of phenylboroxine, (PhBO)(3), with 2. The tetraarylpentaborates smoothly undergo hydrolysis to give [Rh(PMe3)(4)](+)[B5O6(OH)(4)](-) (5).

DOI： 10.1021/ic015630w

Platinum complex-catalyzed hydrosilylation of 2,2-diaryl-1-methylenecyclopropane affording (silylmethyl)cyclopropane

Y Nishihara, M Itazaki, K Osakada

TETRAHEDRON LETTERS 43 ( 11 ) 2059 - 2061 2002年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：PERGAMON-ELSEVIER SCIENCE LTD

PtI2(PPh3)(2)-catalyzed hydrosilylation of 2.2-diphenyl-1-methylenecyclopropane with HSiEt3 forms (2,2-diphenylcyclopropyl)methyl(triethyl)silane in 87% yield as a sole product. This highly selective addition of Si-H bond converts 2,2-diaryl-1-methylenecyclopropane into its silylated derivative without ring-opening. (C) 2002 Elsevier Science Ltd. All rights reserved.

DOI： 10.1016/S0040-4039(02)00165-X

Structure and properties of halogeno(hydrido) (triorganosilyl)rhodium(III) complexes, RhX(H) ((SiRnR3-n2)-R-1)(PPh3)(2) (X = Cl, I; R-1 = OSiMe3, OEt, R-2 = Me). Influence of the alkoxy groups and halo ligand on stability and reactivity of the complexes

Y Nishihara, M Takemura, K Osakada

ORGANOMETALLICS 21 ( 5 ) 825 - 831 2002年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER CHEMICAL SOC

Silylrhodium(III) complexes RhX(H)((SiRnR3-n2)-R-1)(PPh3)(2) (1: X = I, R-1 = OSiMe3, R-2 = Me, n = 1; 2: X= I, R-1 = OEt,n = 3; 3: X = I, R-1 = OEt, R-2 = Me, n = 2; 4: X=I, R-1 = OEt, R-2 = Me, n = 1; 5: X= Cl, R-1 = OSiMe3, R-2 = Me, n = 1; 6: X = Cl, R-1 = OEt, n = 3; 7: X = Cl, RI = OEt, R2 = Me, n = 2; 8: X = Cl, R-1 = OEt, R-2 = Me, n = 1) were prepared by oxidative addition of (HSiRnR3-n2)-R-1 to RhX(PPh3)(3) and characterized by means of NMR (H-1, C-13{H-1}, P-31{H-1}, and Si-29{H-1}) and IR spectroscopy as well as elemental analyses. X-ray crystallography of 1, 2, and 6 showed a distorted square-pyramidal coordination around the Rh center that is bonded to the silyl ligand at the apical position and to halo and hydrido ligands in trans positions in the basal plane. The Rh-Si bonds in 2 and 6 are the shortest among Rh-Si bonds of the silylrhodium complexes reported to date. Si-29{H-1} NMR spectra of 1-8 show that the J(RhSi) value increases with an increase in the number of alkoxy substituents on the Si atom. Complex 2 reacted with HSiMe2(OSiMe3), HSi(OEt)(2)Me, and HSi(OEt)Me-2, respectively, to cause exchange of the silyl group between the Rh complex and the organosilane, forming an equilibrium mixture. Complexes 5-8 undergo thermally induced coupling of their chloro and triorganosilyl ligands at 60 degreesC to liberate the respective chloro(triorgano)silane. The reaction obeys first-order kinetics in the Rh complex with the observed rate constants in the order 5 congruent to 8 > 7 > 6. The OEt groups at the Si retard the coupling of chloro and triorganosilyl ligands significantly. Formation of ISiMe2(OEt)(2) from 4 takes place at a slightly slower rate than the reaction of 6, while complexes 2 and 3 do not undergo coupling of their iodo and silyl ligands at 60 degreesC.

DOI： 10.1021/om010862o

Isomerization of (Z)-alkenylsilanes to (E)-isomers with hydrosilane and RhI(PPh3)(3)

A Mori, E Takahisa, Y Nishihara, T Hiyama

CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE 79 ( 11 ) 1522 - 1524 2001年11月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：NATL RESEARCH COUNCIL CANADA

Isomerization of (E)-2-phenylethenylsilanes to the (Z)-isomers is found to easily take place at 60 degreesC within 1 h using 20-100 mol% of a hydrosilane and 0.1 mol% of RhI(PPh3)(3) and is understood in terms of insertion of alkenylsilanes to hydridorhodium followed by beta -hydride elimination.

DOI： 10.1139/cjc-79-11-1522

Homo-coupling polycondensation of bis(alkynylsilane)s mediated by copper(I) chloride: A new synthesis of poly(arylenebutadiynylene)s

Y Nishihara, T Kato, J Ando, A Mori, T Hiyama

CHEMISTRY LETTERS ( 10 ) 950 - 951 2001年10月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：CHEMICAL SOC JAPAN

Homo-coupling polycondensation of aromatic compounds bearing two (trimethylsilyl)ethynyl groups mediated by copper(I) chloride in DMF gives conjugated poly(arylenebutadiynylene)s in up to 94% yield with molecular weight of 4000-8900 (M-w/M-n = 1.78-2.09).

DOI： 10.1246/cl.2001.950

Preparation and reactions of monocyclic bis(cyclopentadienyl)titanacyclopentenes and -pentadienes

K Sato, Y Nishihara, SQ Huo, ZF Xi, T Takahashi

JOURNAL OF ORGANOMETALLIC CHEMISTRY 633 ( 1-2 ) 18 - 26 2001年9月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE SA

A combination of CP2TiCl2-2EtMgBr was found to be very effective for the formation of monocyclic titanacyclopentenes in excellent yields. On the other hand, a combination of Cp2TiCl2-2n-BuLi was used for intermolecular coupling of two alkynes to form titanacyclopentadienes in good to excellent yields. A reaction temperature range from -10 to -30 degreesC was critical for the success of the combinations. Reactions of these in situ-prepared titanacycles show interesting similarities to or differences from their zirconacycle analogs. (C) 2001 Published by Elsevier Science BN.

DOI： 10.1016/S0022-328X(01)01072-5

Reactions of HOSiMe2Ar with PtPPh3 complexes leading to Si-C bond activation or formation of a siloxoplatinum complex

N Mintcheva, Y Nishihara, A Mori, K Osakada

JOURNAL OF ORGANOMETALLIC CHEMISTRY 629 ( 1-2 ) 61 - 67 2001年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE SA

PtI2(PPh3)(2) reacts with HOSiMe2(C6H4CF3-4) at 60 degreesC in the presence of AgBF4 to give a mixture of trans-PtI(C6H4CF3-4)(PPh3)(2) (1) and [Pt-2(mu -I)(2)(PPh3)(4)](BF4)(2) (2). Each of the complexes is isolated and characterized by X-ray crystallography and/or NMR spectroscopy. The P-31{H-1}-NMR study of the reaction of AgBF4 with PtI2(PPh3)(2) in acetone-d(6) revealed the formation of trans-[PtI(PPh3)(2)(acetone)]BF4 (3) although isolation of the cationic complex was not feasible due to its facile conversion to 2. Addition of HOSiMe2(C6H4CF3-4) and Ag2O to a toluene Solution of trans-PtI(Ph)(PPh3)(2) causes replacement of the iodo ligand with the siloxo group to afford trans-[Pt(Ph) {OSiMe2(C6H4CF3-4)} (PPh3)(4)] (4). Crystallographic results of 4 show the coordination of the phenyl, siloxo, and PPh3 ligands to the square-planar Pt center with a large Pt-O-Si angle. Complex 4 does not decompose below 60 degreesC in a toluene solution, but reacts with CH2Cl2 and CHCl3 at room temperature to form trans-Pt-Cl(Ph)(PPh3)(2) (5). (C) 2001 Elsevier Science B.V. All rights reserved.

DOI： 10.1016/S0022-328X(01)00796-3

Hydrido-Rhodium(I) and -Iridium(I) complex promoted ring-opening isomerization of unsymmetrically substituted methylenecyclopropanes into 1,3-dienes. Structures of intermediates and reaction pathways

Y Nishihara, C Yoda, K Osakada

ORGANOMETALLICS 20 ( 11 ) 2124 - 2126 2001年5月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER CHEMICAL SOC

2-Phenyl-1-methylenecyclopropane and 2,2-diphenyl-1-methylenecyclopropane react with MH(CO)(PPh3)(3) (M = Rh, Ir) to produce 1,3-dienes or the intermediate Rh and Ir complexes having a 3-butenyl ligand, depending on the conditions. The structures and chemical properties of the obtained complexes suggest plausible pathways for the ring-opening isomerization of the methylenecyclopropanes to the corresponding dienes.

DOI： 10.1021/om010081n

Palladium-catalyzed cross-coupling polycondensation of bisalkynes with dihaloarenes activated by tetrabutylammonium hydroxide or silver(I) oxide

A Mori, T Kondo, T Kato, Y Nishihara

CHEMISTRY LETTERS ( 4 ) 286 - 287 2001年4月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：CHEMICAL SOC JAPAN

The palladium(O)-catalyzed polycondensation of bis-trimethylsilylethynylated compounds with diiodoarenes to give the polymers bearing arylene-ethynylene moieties is carried out by the use of silver(I) oxide as an activator. Polycondensation of bifunctional terminal alkynes and aryl halides is also accomplished by the palladium-catalyzed cross coupling in the presence of tetrabutylammonium hydroxide (TBAOH), tetrabutylammonium fluoride (TBAF), or silver(I) oxide.

DOI： 10.1246/cl.2001.286

Si-C bond activation of ArMe2SiOH promoted by a bromoplatinum(II) complex and Ag2O. Aryl group transfer from silicon to platinum

N Mintcheva, Y Nishihara, M Tanabe, K Hirabayashi, A Mori, K Osakada

ORGANOMETALLICS 20 ( 6 ) 1243 - 1246 2001年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER CHEMICAL SOC

[PtBr(PEt3)(3)]BF4 (1) reacts with art excess of dimetliyl{4-(trifluoromethyl)phenyl}silanol in the presence of Ag2O and 4 Angstrom molecular sieves at 60 OC to afford trans-Pt(C6H4CF3-4)(2)(PEt3)(2) (2) The reaction without molecular sieves and that with addition of a smalE amount of water give a mixture of 2 and [Pt-2(mu -OH)(2)-(PEt3)(4)](BF4)(2). The organic products of the reaction are composed of ArSiMe2-O-(SiMe2-O)(n)-SiMe2Ar (Ar = C6H4 CF3-4, n = 0, 1, 2) a nd cyclooligodimethylsiloxanes in lesser amounts. The obtained complexes were characterized by NMR spectroscopy and X-ray crystallography.

DOI： 10.1021/om010006c

Reaction of alkynylsilanes with CuCl in polar solvents leading to alkynyl group transfer from Si to Cu

Y Nishihara, M Takemura, A Mori, K Osakada

JOURNAL OF ORGANOMETALLIC CHEMISTRY 620 ( 1-2 ) 282 - 286 2001年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE SA

The reaction of 1-phenyl-2-trimethylsilylethyne with CuCl at 80-100 degreesC in N,N-dimethylformamide (DMF) or N,N-dimethylimidazolidinone (DMI) yielded the alkynylcopper species[Cu2Cl(C drop CPh)(n)] (1) in 56-63% yields. Heating 1 at 80 degreesC under aerobic conditions gave 1,4-diphenyl-1,3-butadiyne in 82% yield via an oxidative coupling of the phenylethynyl ligands. (C) 2001 Elsevier Science B.V. All rights reserved.

DOI： 10.1016/S0022-328X(00)00794-4

Non-Sonogashira-type palladium-catalyzed coupling reactions of terminal alkynes assisted by silver(I) oxide or tetrabutylammonium fluoride

A Mori, J Kawashima, T Shimada, M Suguro, K Hirabayashi, Y Nishihara

ORGANIC LETTERS 2 ( 19 ) 2935 - 2937 2000年9月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER CHEMICAL SOC

[GRAPHICS]
Palladium-catalyzed reaction of aryl and alkenyl halides with terminal alkynes in the presence of silver(I) oxide as an activator furnishes various arylated or alkenylated alkynes in good to excellent yields, The similar coupling reaction is also found to proceed using tetrabutylammonium fluoride (TBAF) or tetrabutylammonium hydroxide (TBAOH) as an activator.

DOI： 10.1021/ol0061586

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