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1.
Raquel Ares Margarita López-Torres Nina Gómez-Blanco Jesús J. Fernández 《Journal of organometallic chemistry》2008,693(24):3655-3667
Treatment of the chloro-bridged dinuclear complex [Pd{3,4-(MeO)2C6H2C(H)N(Cy)-C6,N}(μ-Cl)]2 (1) with homobidentate [P,P], [As,As], [N,N], and heterobidentate [P,As], [P,N] ligands in a 1:1 molar ratio gave the dinuclear complexes [{Pd[3,4-(MeO)2C6H2C(H)N(Cy)-C6,N](Cl)}2{μ-L}] (L = Ph2PC4H6(NH)CH2PPh2 (2); Ph2As(CH2)2AsPh2 (3); 1,3-(NH2CH2)2C6H4 (4); Ph2P(CH2)2AsPh2 (5); Ph2P(CH2)2NH2 (6)), with the bidentate ligands bridging the two cyclometallated fragments.The reaction with the homobidentate ligands in a 1:2 molar ratio in the presence of NaClO4 afforded the mononuclear compounds [[Pd{3,4-(MeO)2C6H2C(H)N(Cy)-C6,N}{L-P,P}][ClO4] (L = Ph2PC4H6(NH)CH2PPh2 (7); (o-Tol)2P(CH2)2P(o-Tol)2 (8)), [Pd{3,4-(MeO)2C6H2C(H)N(Cy)-C6,N}{Ph2As(CH2)2AsPh2-As,As}][ClO4] (9) and [Pd{3,4-(MeO)2C6H2C(H)N(Cy)-C6,N}{L-N,N}][ClO4] (L = NH2(CH2)3NH2 (10); NH2(C6H8)CH2(C6H8)NH2 (11); 1,3-(NH2CH2)2C6H4 (12); 1,3-(NH2)2C5H3N (13); NH2(C6H4)O(C6H4)NH2 (14); NMe2(CH2)2NMe2 (15)), in which the chloro ligands are absent and the bidentate ligands are chelated to the palladium atom.Reaction of 1 with Ph2P(CH2)2AsPh2 in 1:2 molar ratio in acetone in the presence of NH4PF6 afforded the analogous mononuclear compound [Pd{3,4-(MeO)2C6H2C(H)N(Cy)-C6,N}{Ph2P(CH2)2AsPh2-P,As}][PF6] (16); whereas reaction with Ph2P(CH2)3NH2 gave [Pd{3,4-(MeO)2C6H2C(H)N(Cy)-C6,N}{Ph2P(CH2)3N(CMe2)-P,N}][PF6] (17), derived from intermolecular condensation between the aminophosphine and acetone. Condensation of the NH2 group was precluded by change of solvent, using dichloromethane.Iminophoshines also reacted with 1 in 1:2 molar ratio in acetone to give a new series of mononuclear cyclometallated complexes: [Pd{3,4-(MeO)2C6H2C(H)N(Cy)-C6,N}{L-P,N}][ClO4] (L = Ph2PC6H4C(H)NCy (20); Ph2PC6H4C(H)NC(CH3)3 (21); Ph2PC6H4C(H)NNMe2 (22); Ph2PC6H4C(H)NNHMe (23); Ph2PC6H4C(H)NNHPh (24)). Analogous complexes with a stable P,O-chelate were obtained using bidentate [P,O] donor ligands: [Pd{3,4-(MeO)2C6H2C(H)N(Cy)-C6,N}{L-P,O}][Cl] (L = 2-(Ph2P)C6H4CHO (25); Ph2PN(Me)C(O)Me (26)).The crystal structures of compounds 1, 5, 15, 16, 18, 20 have been determined by X-ray crystallography. 相似文献
2.
The reactions of aminophosphines with Group 6 metal carbonyls afford both mono-substituted and disubstituted complexes. The reaction of Ph2PN(H)C6H11 with molybdenum tetracarbonyl derivative gives a mixture of cis and trans-isomers. The reaction of Ph2PN(H)Ph with Pd(COD)Cl2 leads to the PN bond cleavage to give chloro bridged dimer, [Pd(PPh2O)(PPh2OH)(μ-Cl)]2, whereas with Pt(COD)Cl2, disubstituted cis-[PtCl2{PPh2N(H)R}2]2 was obtained. The reaction of Ph2PN(H)C6H11 with RuCl2(DMSO)4 or RuCl2(PPh3)3 leads to the formation of ionic complex, [RuCl{Ph2PN(H)C6H11}3]Cl. 相似文献
3.
Raquel Ares Alberto Fernández M. Teresa Pereira Leticia Naya 《Journal of organometallic chemistry》2007,692(20):4197-4208
Treatment of the chloro-bridged dinuclear compounds [{Pd[RC6H3C(H)NCy-C2,N]}(μ-Cl)]2 (R = 4-(COH), 1; R = 5-(COH), 2) with bidentate phosphorus or arsenic diphosphines or diarsine ligands in 1:1 molar ratio gave the dinuclear complexes [{Pd[RC6H3C(H)NCy-C2,N](Cl)}2{μ-(o-Tol)2P(CH2)2P(o-Tol)2}] (R = 4-(COH), 3; R = 5-(COH), 4), [{Pd[RC6H3C(H)NCy-C2,N](Cl)}2{μ-Ph2PC4H2(NH)CH2PPh2}] (R = 4-(COH), 5; R = 5-(COH), 6) and [{Pd[RC6H3C(H)NCy-C2,N](Cl)}2{μ-Ph2As(CH2)2AsPh2}] (R = 4-(COH), 7; R = 5-(COH), 8) with the homobidentate [P,P] and [As,As] ligands in a bridging mode. Treatment of 1 and 2 with the aminophosphine Ph2P(CH2)2NH2 yields the dinuclear complexes [{Pd[RC6H3C(H)NCy-C2,N](Cl)}2{μ-Ph2P(CH2)2NH2}] (R = 4-(COH), 9; R = 5-(COH), 10). The analogous reactions carried out in a 1:2 molar ratio, in the presence of NH4PF6 or NaClO4, gave the mononuclear compounds [Pd{RC6H3C(H)NCy-C2,N}{(o-Tol)2P(CH2)2P(o-Tol)2-P,P}][PF6] (R = 4-(COH), 11; R = 5-(COH), 12), [Pd{RC6H3C(H)NCy-C2,N}{Ph2PC4H2(NH)CH2PPh2-P,P}][ClO4] (R = 4-(COH), 13; R = 5-(COH), 14) and [Pd{RC6H3C(H)NCy-C2,N}{Ph2As(CH2)2AsPh2-As,As}][ClO4](R = 4-(COH), 15; R = 5-(COH), 16), with the [P,P] and [As,As] ligands chelated to the palladium atom.Treatment of 2 with Ph2P(CH2)3NH2 in a 1:2 molar ratio in acetone in the presence of NH4PF6 afforded the mononuclear compound [Pd{5-(COH)C6H3C(H)NCy-C2,N}{Ph2P(CH2)3N(Me2)-P,N}][PF6], 17, via intermolecular condensation between the aminophosphine and the solvent. Condensation was precluded using toluene as solvent to give [Pd{RC6H3C(H)NCy-C2,N}{Ph2P(CH2)nNH2-P,N}][PF6], (n = 3, R = 5-(COH), 18; n = 2, R = 4-(COH), 19; n = 2, R = 5-(COH), 20). Treatment of 1 and 2 with Ph2P(C6H4)CHO in a 1:2 molar ratio in the presence of NH4PF6 gave the mononuclear complexes [Pd{RC6H3C(H)NCy-C2,N}{2-(Ph2P)C6H4CHO-P,O}][PF6] (R = 4-(COH), 21; R = 5-(COH), 22) with the palladium atom bonded to four different atoms (C, N, P, O) and a chelating [P,O] ligand. The crystal structures of compounds 7, 11, 15 and 21 have been determined by X-ray crystallography. 相似文献
4.
Qibo Liu 《Journal of fluorine chemistry》2009,130(10):922-925
(E)-(1,2-Difluoro-1,2-ethenediyl)bis[tributylstannane], 3, readily undergoes a Pd(PPh3)4/CuI-catalyzed cross-coupling reaction with iodotrifluoroethene to yield (E)-octafluoro-1,3,5-hexatriene, 4, in high isomeric purity. (1Z,3E,5Z)-(1,2,3,4,5,6-Hexafluoro-1,3,5-hexenetriyl)bis[tributylstannane], 7, was sequentially prepared from (1Z,3E,5Z)-(1,2,3,4,5,6-hexafluoro-1,3,5-hexenetriyl)bis[triethylsilane], 5, which was prepared via a Pd(PPh3)4/CuI-catalyzed cross-coupling reaction of 3 with (E)-1,2-difluoro-1-iodo-2-triethylsilylethene, 6. Pd(PPh3)4/CuI cross-coupling of 7 with iodotrifluoroethene gave (3E,5E,7E)-dodecafluoro-1,3,5,7,9-decapentaene, 8. 相似文献
5.
The Pd-catalyzed trans-selective monoalkynylation of 1,1-dihalo-1-alkenes with XZnCCSiMe3, where X is Br or Cl, can proceed generally in excellent yields in the presence of Pd(DPEphos)Cl2 or Pd(dppf)Cl2, and subsequent alkylation with methyl- and ethylzincs can proceed in excellent yields with ≥98% retention of configuration in the presence of Pd(tBu3P)2 as a catalyst. 相似文献
6.
Konstantinos A. Chatziapostolou Alexios Grigoropoulos Aris Terzis Panayotis Kyritsis Georgios Pneumatikakis 《Journal of organometallic chemistry》2007,692(19):4129-4138
The complexes [Rh(CO)(PPh3){Ph2PNP(O)Ph2-P,O}] (3), [Rh(CO)2{Ph2P(Se)NP(Se)Ph2-Se,Se′}] (5), and [Rh(CO)(PPh3){Ph2P(Se)NP(Se)Ph2-Se,Se′}] (6), were synthesised by stepwise reactions of CO and PPh3 with [Rh(cod){Ph2PNP(O)Ph2-P,O}] (2) and [Rh(cod){Ph2P(Se)NP(Se)Ph2-Se,Se′}] (4), respectively. The complexes 3, 5 and 6 have been studied by IR, as well as 1H and 31P NMR spectroscopy. The ν(CO) bands of complexes 3 and 6 appear at approximately 1960 cm−1, indicating high electron density at the RhI centre. The structure of complexes 3 and 6 has been determined by X-ray crystallography, and the 31P NMR chemical shifts have been resolved via low temperature NMR experiments. Both complexes exhibit square planar geometry around the metal centre, with the five-membered ring of complex 3 being almost planar, and the six-membered ring of complex 6 adopting a slightly distorted boat conformation. The C-O bond of the carbonyl ligand is relatively weak in both complexes, due to strong π-back donation from the electron rich RhI centre. The catalytic activity of the complexes 2, 3 and 6 in the hydroformylation of styrene has been investigated. Complexes 2 and 3 showed satisfactory catalytic properties, whereas complex 6 had effectively no catalytic activity. 相似文献
7.
Lucila Márquez-Pallares Marisol Reyes-Lezama Herbert Höpfl 《Journal of organometallic chemistry》2007,692(8):1698-1707
The synthesis of the rhenacycles [Re(CO)3(PR3){Ph2P(Se)NP(Se)Ph2-κ2Se}], PR3 = PPh3 (1), PMePh2 (2), and PMe2Ph (3) by a straightforward high yield procedure is described. Attempts at the preparation of the spiro [Re(CO)2(Ph2PCH2CH2PPh2-κ2P){Ph2P(Se)NP(Se)Ph2-κ2Se}] resulted in the formation of complexes [Re2(CO)6{Ph2P(Se)NP(Se)Ph2-κ2Se}2(μ-Ph2PCH2CH2PPh2)] (4) and [Re(CO)3(Ph2PCH2CH2PPh2-κ2P){Ph2P(Se)NP(Se)Ph2-κSe}] (5). All new inorganic rhenacycles 1-5 were characterized in solution and in solid state. The X-ray diffraction analysis of [Re(CO)3PPh3{Ph2P(Se)NP(Se)Ph2-κ2Se}] showed that its MnSePNPSe ring conformation is sensitive to temperature. 相似文献
8.
Ethyl anti-4-substituted phenyl-2-oxo-1,3-oxazolidine-5-carboxylates were synthesized stereoselectively in excellent yields using the Ph3P-CCl4-Et3N system by SN2 cyclization of N-Boc-β-amino alcohols. syn to anti conversion of ethyl 4-substituted phenyl-2-oxo-1,3-oxazolidine-5-carboxylates using DBU as base is also described. 相似文献
9.
Ring closing metathesis (RCM) of 8,9-diallylpurines or 9-butenyl-8-vinylpurines with the Grubbs 2nd generation catalyst resulted in fused 6,9- or 8,9-dihydropyrido[e]purines, respectively. The 8,9-dialkenylpurines were prepared from 8-bromopurines after 9-alkenylation and subsequent Stille coupling at C-8 with alkenylstannanes in the presence of Pd(PPh3)4 or Pd(PPh3)2Cl2. 相似文献
10.
Farkhanda Shaheen Amin Badshah Gianluca Croce Dick de Vos 《Journal of organometallic chemistry》2010,695(3):315-322
Metallacyclic palladium(II) complexes [Pd(L)(R3P)Cl], L = TIQDTC (1,2,3,4-tetrahydroisoquinolinedithiocarbamate), 4MpipDTC (4-methylpipradinedithiocarbamate), MPizDTC (N-methylpiperazinedithiocarbamate), R3P = Ph3P, (o-tolyl)3P, Ph2ClP, were synthesized in a 1:1 molar metal-ligand ratio. These complexes were characterized by elemental analyses, FT-IR, multinuclear (1H, 13C and 31P) NMR. The X-ray crystal structures of [Pd(TIQDTC)(Ph3P)Cl] and [Pd(TIQDTC)((o-tolyl)3P)Cl] show a slightly distorted square planar environment around the Pd(II) ion with S-Pd-S and P-Pd-Cl average bond angles of 74.51 and 92.41, respectively. These complexes were screened for cytotoxic, antifungal, anti-inflammatory and antibacterial activity. Some complexes exhibit a significant activity against fungi. 相似文献
11.
Helen Caldwell Paul S. Pregosin Alberto Albinati 《Journal of organometallic chemistry》2007,692(19):4043-4051
Reaction of [Ru(Cp∗)(CH3CN)3](PF6) with P(o-tolyl)3 affords [Ru(Cp∗){(η6-o-tolyl)P(o-tolyl)2}](PF6) (4) in which the P-atom is not coordinated to the metal. The solid-state structure of 4 has been determined. A related reaction with P(p-tolyl)3 reveals a small quantity [Ru(Cp∗){(η6-p-tolyl)P(o-tolyl)2}](PF6), in solution, but mostly the expected bis-phosphine complex. Reaction of the Ru(IV) dication, [Ru(Cp∗)(η3-PhCHCHCH2)(DMF)2](PF6)2, with P(o-tolyl)3 gives a mixture of the phosphonium salt, C6H5CHCHCH2P(o-tolyl)3 (9) and the dication [Ru(Cp∗) (η6-C6H5CHCHCH2P(o-tolyl)3)](PF6)2 (10). Salt 9 forms via attack of the P-atom on the allyl ligand. The latter product results from complexation of 9 via the phenyl group of the former allyl ligand. It would seem that the sterically demanding P(o-tolyl)3 ligand is not readily compatible with the Ru(Cp∗) fragment, in either the +2 or +4 oxidation state. Detailed NMR studies are reported. 相似文献
12.
Klaus Diemert Thomas Hahn Wilhelm Kuchen 《Phosphorus, sulfur, and silicon and the related elements》2013,188(3-4):287-294
Abstract Ph 2 PCOONa 2, hergestellt dutch Reaktion von Ph2PNa mit CO2, wird in protischen Medien rasch unter Bildung von Ph2PH and CO2 hydrolysiert. Die Hydrolyse verlauft in Natronlauge sehr viel langsamer and es bilden sich zusätzlich geringe Mengen Ph2P(O)O? und HCOO?, Aus 2 and stöchiometrischen Mengen RI bilden sich tertiäre Phosphine Ph2PR (R[dbnd]Me, Et) während mit überschüssigem MeI das Phosphoniumsalz [Ph2PMe2]I erhalten wird. Ph2PCOOMe, Ph2PCOOSiMe3 bzw. Ph2PCSSNa wurden durch Umsetzung von 2 mit (MeO)2SO2, Me3SiCl bzw. CS2 synthetisiert. Ph2P(O)ONa and Ph2P(S)SNa entstanden bei der Reaktion von 2 mit O2 oder S8 in Benzol. Concerning Sodiumdiphenylphosphinoformiate Ph2PCOONa1. Ph2PCOONa 2, prepared from Ph2PNa and CO2, is readily hydrolyzed in protic media with formation of Ph 2 PH and CO2. Hydrolysis is much slower in NaOH and small quantities of Ph2P(O)O? and HCOO? are additionally formed. Reactions of 2 with RI in stoichiometrical amounts gave tertiary phosphines Ph2PR (R[dbnd]Me, Et) while the phosphonium compound [Ph2PMe2]I resulted from 2 and MeI in excess. Ph2PCOOMe, Ph2PCOOSiMe3 or Ph2PCSSNa were obtained from 2 and (MeO)2SO2, Me3SiCl or CS2. Ph2P(O)ONa and Ph2P(S)SNa were isolated when 2 was reacted with O2 or S8 in benzene. 相似文献
13.
Solid solution CeO2-MOx (M=La3+, Ca2+) promoted Pd/γ-Al2O3 catalysts were prepared by a deposition-precipitation method. The structural properties were investigated by X-ray diffraction, X-ray photoelectron spectroscopy, and Raman spectroscopy. The results showed that Mn+ ions incorporated into CeO2 lattice and solid solutions formed in Pd/γ-Al2O3-CeO2-MOx catalysts. The formation of solid solution was confirmed by the change in lattice parameters of CeO2 and the shift of 2θ angles as compared with pure CeO2. A strain formed in the O2− sub-lattice of CeO2 was revealed by Raman analyses, which decreased the intensity of the Raman-active band at around 463 cm−1 owing to the F2g symmetric stretching of Ce−O bond. The appearance of a new band at 615 cm−1 (in the case of Pd/γ-Al2O3-CeO2-CaO) and a shoulder at 320 cm−1 (in the case of Pd/γ-Al2O3-CeO2-La2O3) was also confirmed. Ionic Pdδ+ species were formed in the catalysts, which exhibited higher binding energies (0.5−0.6 eV higher for Pd 3d5/2) than that of normal PdO. The catalysts showed high activity and stability for low temperature methane combustion. 10% and 100% conversions of methane could be obtained at temperatures of 254 and 340 °C, respectively, over Pd/γ-Al2O3-CeO2-La2O3 catalyst under an hourly space velocity of 50000 h−1. 相似文献
14.
Juan Manuel Germán-Acacio 《Journal of organometallic chemistry》2006,691(15):3223-3231
The [Mn(CO)4−x(L){Ph2P(Se)NP(Se)Ph2-κ2Se}] complexes, where x = 1 for L = PPh3 and PMePh2, and x = 2 for L = Ph2PCH2CH2PPh2 (diphos), were synthesized by two routes. The complexes were characterized by IR, mass spectrometry (FAB+), NMR (1H, 13C, 31P, 77Se) spectroscopy and/or single crystal X-ray diffraction. The X-ray diffraction analysis for [Mn(CO)3PMePh2{Ph2P(Se)NP(Se)Ph2-κ2Se}] showed that the unit cell contains two independent mononuclear molecules with different MnSePNPSe rings’ conformations. 相似文献
15.
Issa Yavari Zinatossadat Hossaini Maryam Sabbaghan Majid Ghazanfarpour-Darjani 《Tetrahedron》2007,63(38):9423-9428
The reaction of ethyl propiolate with triphenylphosphine (Ph3P) in the presence of N-alkylisatins led to ethyl 2,2,2-triphenyl-2,5-dihydro-1,2-λ5-oxaphosphole-4-carboxylate-spiro-1-alkyl-1,3-dihydro-2H-indol-2-ones in good yield. The reaction of dialkyl acetylenedicarboxylates with Ph3P in the presence of N-alkylisatins led to dialkyl 2,2,2-triphenyl-2,5-dihydro-1,2-λ5-oxaphosphole-3,4-dicarboxylate-spiro-1-alkyl-1,3-dihydro-2H-indol-2-ones and alkyl 4-(alkoxy)-5-oxo-2,5-dihydro-3-furancarboxylate-spiro-1-alkyl-1,3-dihydro-2H-indol-2-ones. 相似文献
16.
S. Chandrasekhar G. Chandrashekar K. Vijeender M. Srinivasa Reddy 《Tetrahedron letters》2006,47(20):3475-3478
B(C6F5)3 as a catalyst and polymethylhydrosiloxane as a hydride source have been employed for the reductive dehydroxylation of Baylis-Hillman adducts wherein the hydride adds in an SN2′ manner onto the unactivated allyl alcohol moiety with concomitant elimination of the hydroxy group along with double bond migration. The products formed were found to be E in the case of ester adducts and Z in the case of nitrile adducts. 相似文献
17.
Michael Block Christoph Wagner Dirk Steinborn 《Journal of organometallic chemistry》2011,696(9):1768-1781
Reactions of ω-diphenylphosphinofunctionalized alkyl phenyl sulfides Ph2P(CH2)nSPh (n = 1, 1a; 2, 2a; 3, 3a), sulfoxides Ph2P(CH2)nS(O)Ph (n = 1, 1b; 2, 2b; 3, 3b) and sulfones Ph2P(CH2)nS(O)2Ph (n = 1, 1c; 2, 2c; 3, 3c) with dinuclear chlorido bridged rhodium(I) complexes [(RhL2)2(μ-Cl)2] (L2 = cycloocta-1.5-diene, cod, 4; bis(diphenylphosphino)ethane, dppe, 5) afforded mononuclear Rh(I) complexes of the type [RhCl{Ph2P(CH2)nS(O)xPh-κP}(cod)]1 (n/x = 1/0, 6a; 1/1, 6b; 1/2, 6c; 2/0, 8a; 2/1, 8b; 2/2, 8c; 3/0, 10a; 3/1, 10b; 3/2, 10c) and [RhCl{Ph2P(CH2)nS(O)xPh-κP}(dppe)] (n/x = 1/0, 7a; 1/1, 7b; 1/2, 7c; 2/0, 9a; 2/1, 9b; 2/2, 9c; 3/0, 11a; 3/1, 11b; 3/2, 11c) having the P^S(O)x ligands κP coordinated. Addition of Ag[BF4] to complexes 6-11 in CH2Cl2 led with precipitation of AgCl to cationic rhodium complexes of the type [Rh{Ph2P(CH2)nS(O)xPh-κP,κS/O}L2][BF4] having bound the P^S(O)x ligands bidentately in a κP,κS (13a-18a, 15b-18b) or a κP,κO (13b, 14b, 13c-18c) coordination mode. Unexpectedly, the addition of Ag[BF4] to 6a in THF afforded the trinuclear cationic rhodium(I) complex [Rh3(μ-Cl)(μ-Ph2PCH2SPh-κP:κS)4][BF4]2·4THF (12·4THF) with a four-membered Rh3Cl ring as basic framework. Addition of sodium bis(trimethylsilyl)amide to complexes 6-11 led to a selective deprotonation of the carbon atom neighbored to the S(O)x group (α-C) yielding three different types of organorhodium complexes: a) Organorhodium intramolecular coordination compounds of the type [Rh{CH{S(O)xPh}CH2CH2PPh2-κC,κP}L2] (22a-c, 23a-c), b) zwitterionic complexes [Rh{Ph2PCHS(O)xPh-κP,κS/O}L2] having κP,κS (21a, 21b) and κP,κO (20b/c, 21c) coordinated anionic [Ph2PCHS(O)xPh] ligands, and c) the dinuclear rhodium(I) complex [{Rh{μ-CH(SPh)PPh2-κC:κP}(cod)}2] (19). All complexes were fully characterized spectroscopically and complexes 15b, 15c, 12·4THF and 19·THF additionally by X-ray diffraction analysis. DFT calculations of zwitterionic complexes gave insight into the coordination mode of the [Ph2PCHS(O)Ph] ligand (κP,κS versus κP,κO). 相似文献
18.
Three Pd(II) complexes [Pd2(μ-Cl)2{7,8-(PPh2)2-7,8-C2B9H10}2] · 0.25CH2Cl2 (1), [Pd{7,8-(PPh2)2-7,8-C2B9H10}2] · 4CHCl3 (2) and [PdCl2(1,2-(PPh2)2-1,2-C2B10H10)] (3) have been synthesized by the reactions of 1,2-(PPh2)2-1,2-C2B10H10 with PdCl2 in acetonitrile, cyanophenyl and dichloromethane, respectively. A fourth complex, [PdI2(1,2-(PPh2)2-1,2-C2B10H10)] (4), was obtained by a ligand exchange reaction through the substitution of the Cl− of complex 3 with I−. All four complexes have been characterized by elemental analysis, FT-IR, 1H and 13C NMR spectroscopy and X-ray structure determination. Single crystal X-ray determination showed that the carborane cage, nido for 1, 2 and closo for 3, 4, was coordinated bidentately to the Pd atom through the two P atoms, and the geometry at the Pd atom was square-planar in all the complexes. 相似文献
19.
The first successful intermolecular Heck reaction between Baylis-Hillman adducts and aryl iodides was achieved under the conditions comprising Pd(OAc)2/n-Bu4NBr/KOAc in CH3CN. 相似文献
20.
Nasser Iranpoor Habib Firouzabadi Hamid Reza Shaterian 《Phosphorus, sulfur, and silicon and the related elements》2013,188(9):2093-2096
Immediate and efficient one-pot conversion of tetrahydropyranyl (THP) ethers to their corresponding thiocyanates by in-situ–generated Ph3P(SCN)2 is described. Primary and secondary alkyls and also benzylic THP ethers are converted to their corresponding thiocyanates in excellent yields at room temperature by this method. 相似文献