Mononuclear and heterodinuclear transition metal complexes of functionalized phosphines

Priya, S.; Balakrishna, Maravanji S.; Mague, Joel T.

doi:10.1016/j.jorganchem.2004.07.041

Cited by 12 publications

(10 citation statements)

References 37 publications

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“…The IR spectra of complexes 2 and 3 exhibit strong absorptions in the range 1872-2035 cm −1 characteristic of phosphine donors bound to a cis-M(CO) 4 moiety. 5b, 6 The 31 P NMR spectra of complexes 2 and 3 show single resonances at 144.1 and 121.6 ppm respectively. The coordination shifts for 2 and 3 are 31.9 and 9.4 ppm respectively.…”

Section: Resultsmentioning

confidence: 99%

Bis(2-diphenylphosphinoxynaphthalen-1-yl)methane: transition metal chemistry, Suzuki cross-coupling reactions and homogeneous hydrogenation of olefins

2006

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Transition metal complexes of bis(2-diphenylphosphinoxynaphthalen-1-yl)methane (1) are described. Bis(phosphinite) 1 reacts with Group 6 metal carbonyls, [Rh(CO)2Cl]2, anhydrous NiCl2, [Pd(C3H5)Cl]2/AgBF4 and Pt(COD)I2 to give the corresponding 10-membered chelate complexes 2, 3 and 5-8. Reaction of 1 with [Rh(COD)Cl]2 in the presence of AgBF4 affords a cationic complex, [Rh(COD){Ph2P(-OC10H6)(mu-CH2)(C10H6O-)PPh2-kappaP,kappaP}]BF4 (4). Treatment of 1 with AuCl(SMe2) gives mononuclear chelate complex, [(AuCl){Ph2P(-OC10H6)(mu-CH2)(C10H6O-)PPh2-kappaP,kappaP}] (9) as well as a binuclear complex, [Au(Cl){mu-Ph2P(-OC10H6)(mu-CH2)(C10H6O-)PPh2-kappaP,kappaP}AuCl] (10) with ligand 1 exhibiting both chelating and bridged bidentate modes of coordination respectively. The molecular structures of 2, 6, 7, 9 and 10 are determined by X-ray studies. The mixture of Pd(OAc)2 and effectively catalyzes Suzuki cross-coupling reactions of a range of aryl halides with aryl boronic acid in MeOH at room temperature or at 60 degrees C, giving generally high yields even under low catalytic loads. The cationic rhodium(I) complex, [Rh(COD){Ph2P(-OC10H6)(mu-CH2)(C10H6O-)PPh2-kappaP,kappaP}]BF4 (4) catalyzes the hydrogenation of styrenes to afford the corresponding alkyl benzenes in THF at room temperature or at 70 degrees C with excellent turnover frequencies.

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Section: Resultsmentioning

confidence: 99%

Bis(2-diphenylphosphinoxynaphthalen-1-yl)methane: transition metal chemistry, Suzuki cross-coupling reactions and homogeneous hydrogenation of olefins

2006

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“…The hemilabile phosphine-ether ligand and its Ru(II) complexes also have received much attention due to their wide-range of utility in homogeneous catalysis [16][17][18]. Studies of the coordination chemistry of the Ru(II) complexes in particular containing hemilabile phosphine-ether ligands are useful in understanding the catalytic activity of this class of compounds.…”

Section: Introductionmentioning

confidence: 99%

Methyl–oxygen bond cleavage in hemilabile phosphine–ether ligand of ruthenium(II) complexes

Hsu¹,

Hu²,

Wu³

et al. 2009

Journal of Organometallic Chemistry

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“…Further, the labile M-O coordinate bond can be readily cleaved as and when it is required during the catalytic and biological processes. In view of this, we have extensively studied 8 33 obtained in the reaction of bis(o-phenol)phenylphosphine with titanium tetrachloride. The X-ray structure depicted the presence of both the bridging and the terminal isopropoxy groups.…”

Section: Phosphines With Ether and Alcohol Functionalitiesmentioning

confidence: 99%

Simple tertiary phosphines to hexaphosphane ligands: Syntheses, transition metal chemistry and their catalytic applications

2012

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Designing efficient phosphorus-based ligands to make catalysts for homogeneous catalysis has been a great challenge for chemists. Despite a plethora of phosphorus ligands ranging from simple tertiary phosphines to polyphosphines are known, the enthusiasm to generate new ones is mainly due to the demand from industry for economical and robust catalytic system operational under normal atmospheric conditions. In this context, we have developed new synthetic methodologies for making unusual inorganic ring systems containing trivalent phosphorus centres, novel phosphorus-based multidentate and hybrid ligands and explored their rich transition metal chemistry and catalytic applications. We have also fine tuned a few existing ligand systems with donor functionalities to employ them in homogeneous catalysis. The details are summarized in this account.

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Mononuclear and heterodinuclear transition metal complexes of functionalized phosphines

Cited by 12 publications

References 37 publications

Bis(2-diphenylphosphinoxynaphthalen-1-yl)methane: transition metal chemistry, Suzuki cross-coupling reactions and homogeneous hydrogenation of olefins

Bis(2-diphenylphosphinoxynaphthalen-1-yl)methane: transition metal chemistry, Suzuki cross-coupling reactions and homogeneous hydrogenation of olefins

Methyl–oxygen bond cleavage in hemilabile phosphine–ether ligand of ruthenium(II) complexes

Simple tertiary phosphines to hexaphosphane ligands: Syntheses, transition metal chemistry and their catalytic applications

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