Category: 12150-46-8

12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene, molecular formula is C34H28FeP2, belongs to chiral-phosphine-ligands compound, is a common compound. In a patnet, once mentioned the new application about 12150-46-8, category: chiral-phosphine-ligands

Trans Influence on the Rate of Reductive Elimination. Reductive Elimination of Amines from Isomeric Arylpalladium Amides with Unsymmetrical Coordination Spheres

To determine the trans effect on the rates of reductive eliminations from arylpalladium(II) amido complexes, the reactions of arylpalladium amido complexes bearing symmetrical and unsymmetrical DPPF (DPPF = bis(diphenylphosphino)ferrocene) derivatives were studied. THF solutions of LPd(Ar)(NMeAr?) (L = DPPF, DPPF-OMe, DPPF-CF3, DPPF-OMe,Ph, DPPF-Ph,CF3, and DPPF-OMe,CF3; Ar = C6H 4-4-CF3; Ar? = C6H4-4-CH 3, Ph, and C6H4-4-OMe) underwent C-N bond forming reductive elimination at -15 C to form the corresponding N-methyldiarylamine in high yield. Complexes ligated by symmetrical DPPF derivatives with electron-withdrawing substituents on the DPPF aryl groups underwent reductive elimination faster than complexes ligated by symmetrical DPPF derivatives with electron-donating substituents on the ligand aryl groups. Studies of arylpalladium amido complexes containing unsymmetrical DPPF ligands revealed several trends. First, the complex with the weaker donor trans to nitrogen and the stronger donor trans to the palladium-bound aryl group underwent reductive elimination faster than the regioisomeric complex with the stronger donor trans to nitrogen and the weaker donor trans to the palladium-bound aryl group. Second, the effect of varying the substituents on the phosphorus donor trans to the nitrogen was larger than the effect of varying the substituents on the phosphorus donor trans to the palladium-bound aryl group. Third, the difference in rate between the isomeric arylpalladium amido complexes was similar in magnitude to the differences in rates resulting from conventional variation of substituents on the symmetric phosphine ligands. This result suggests that the geometry of the complex is equal in importance to the donating ability of the dative ligands. The ratio of the differences in rates of reaction of the isomeric complexes was similar to the relative populations of the two geometric isomers. This result and consideration of transition state geometries suggest that the reaction rates are controlled more by substituent effects on ground state stability than on transition state energies. In addition, variation of the aryl group at the amido nitrogen showed systematically that complexes with more electron-donating groups at nitrogen undergo faster reductive elimination than those with less electron-donating groups at nitrogen.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.category: chiral-phosphine-ligands. In my other articles, you can also check out more blogs about 12150-46-8

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Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene, molecular formula is C34H28FeP2. In a Article£¬once mentioned of 12150-46-8, Computed Properties of C34H28FeP2

Transfer hydrogenation with a ferrocene diamide ruthenium complex

The use of a 1,1?-ferrocenediamide ruthenium complex as a mediator for base-free transfer hydrogenation is reported. Ketones were transformed to their respective alcohols at room temperature in 36-99% conversions with turnover frequencies up to 339 h-1.

The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 12150-46-8 is helpful to your research., Computed Properties of C34H28FeP2

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Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene, molecular formula is C34H28FeP2. In a Article£¬once mentioned of 12150-46-8, COA of Formula: C34H28FeP2

Preparation, structure and electrochemistry of heterometallic Ru(II) and Fe(II) complexes

Four ruthenium(II) complexes containing ferrocene-based ligands, Ru(acac)2(dppf) (1), Ru(acac)2(eta2-O2CFc) (2), Ru(PPh3)2(eta2-O2CFc)2(3) and Ru(dppf)(eta2-O2CFc)2(4) have been prepared by the reaction of Ru(acac)2(CH3CN)2with 1,1-bis(diphenylphosphino)ferrocene or Ru(PPh3)3Cl2with ferrocenecarboxylic acid in the presence of sodium bicarbonate. In these complexes, the Ru center is chelated by the dppf ligand or bound with the ferrocenecarboxylate moiety in a eta2fashion. All the complexes were characterized by microanalyses,1H and31P{1H} NMR, ESI-MS, IR, and UV?Vis spectroscopy. The solid state structure of complex 1 was confirmed by X-ray crystallography. Cyclic voltammetry measurements in dichloromethane for all complexes display reversible or quasi-reversible Ru and Fe couples with significant coupling. Two one-electron oxidation waves were observed in the cyclic voltammetry of 3 and 4 due to the stepwise oxidation of [Fe2II,II] into [Fe2II,III]+and [Fe2II,III]+into [Fe2III,III]2+.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.COA of Formula: C34H28FeP2, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 12150-46-8, in my other articles.

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Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene, molecular formula is C34H28FeP2. In a Article£¬once mentioned of 12150-46-8, name: 1,1-Bis(diphenylphosphino)ferrocene

Synthesis and characterization of bridged and chelated diphosphine coordinated transition metal chalcogenide clusters,

Ferrocenyl diphosphine containing iron-palladium clusters [(CO) 6Fe2(mu3-Y)2Pd{PPh 2(eta5-C5H4)Fe(eta5- C5H4)PPh2})] (Y = Se (9); Y = Te (10)) have been prepared by the room temperature reaction of [(CO)6Fe 2(mu3-Y)2Pd(PPh3)2] (Y = Se(5), Te(6)) with dppf. Structural characterization reveals an unusual chelating coordination by ferrocenyl diphosphine ligand attached to palladium atom. Room temperature reactions of dppe with metal clusters [Fe 3(mu3-Te)2(CO)9] (1), [Fe 3(mu3-Te)2(CO)8PPh3] (2) and [(CO)6Fe2(mu3-Y) 2Pd(PPh3)2] (Y = Se(5), Te(6)) have been performed to obtain chalcogenide metal clusters [(CO)18Fe 6(mu3-Te)4{mu-PPh2(CH 2)2PPh2}] (3), [Fe3(mu 3-Te)2(CO)8{PPh2(CH 2)2PPh2}] (4) and [(CO)6Fe 2(mu3-Y)2Pd{PPh2(CH 2)2PPh2}] (Y = Se (7); Y = Te (8)) respectively. In all the compounds the diphosphine ligands are attached to metal centres by forming either chelating or bridging mode. The structures of compounds 3, 4, 7 and 9 have been established by single crystal X-ray crystallography.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.name: 1,1-Bis(diphenylphosphino)ferrocene. In my other articles, you can also check out more blogs about 12150-46-8

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Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

Reference of 12150-46-8, Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene, molecular formula is C34H28FeP2. In a patent, introducing its new discovery.

Synthesis and Reactions of But-2-yne Complexes of Tungsten(II) containing Pyridine-2-thionate (SC5H4N): Crystal Structure of

The complex *0.5CH2Cl2 reacted with an equimolar amount of K (SC5H4N = pyridine-2-thionate) to give 1.Two equivalents of K yielded the mono(but-2-yne) complex 2.Complex 1 reacted with a slight excess of Na in acetonitrile to afford the cationic bis(but-2-yne) complex 3 which has been crystallographically characterised: monoclinic, space group P21/n, Z = 4, a = 19.806(21), b = 13.498(13), c = 15.289(13) Angstroem, and beta = 117.4(1) deg.The structure was refined to R = 0.064 for 2102 reflections above background.The coordination geometry about the tungsten may be considered to be octahedral, with the nitrogen and sulfur atoms of the pyridine-2-thionate ligand and the two cis and parallel but-2-yne ligands occupying the equatorial sites with the carbonyl and acetonitrile ligands in the axial sites.The reaction chemistry of 3 with neutral mono- and bi-dentate donor ligands is discussed.The barrier to but-2-yne rotation of several of the complexes was investigated by variable-temperature 1H NMR spectroscopy, and 13C NMR spectroscopy was used to suggest the number of electrons donated by the but-2-yne ligands to the tungsten in these complexes.

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Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene, molecular formula is C34H28FeP2. In a Article£¬once mentioned of 12150-46-8, Product Details of 12150-46-8

Metal ?-complexes of benzene derivatives. XLVIII. Dimethylphosphano derivatives of bis(benzene) chromium as monodentate and chelating ligands at mu-ethylidyne-nona(carbonyl)-tri(cobalt). Synthesis via ETC-autocatalysis, crystal structure determination and redox behavior of <(Me2P-eta.... Reaction of mu-ethylidyne-nona(carbonyl)-tri(cobalt) (3) with (Me2P-eta6-C6H5)(eta6-C6H6)Cr (1) and (Me2P-eta6-C6H5)2Cr (2), respectively, at ambient temperature affords the substitution products <(Me2P-eta6-C6H5)(eta6C6H6)Cr<(mu-MeC)Co3(CO)8> (5), <(Me2P-eta6-C6H5)2Cr><(mu-MeC)Co3(CO)8>2 (6) and <(mu-MeC)Co3(CO)7> (7).The surprisingly mild conditions under which these reactions proceed are a consequence of an electron-transfer chain (ETC) autocatalysis which operates due to the close proximity of the redox potentials 1+/0, 2+/0 and 30/- as determined by cyclic voltammetry.In the case of 6, reduction of the two CCo3 carbonyl cluster units does not feature redox splitting, i.e. deltaE1/2<100 mV.EPR evidence for the ETC mechanism, which is initiated by the formation of the radical ions 1 cation radical, 2 cation radical and 3 anion radical, is also presented.Compounds 6 and 7 were subjected to X-ray diffraction analysis. 6: triclinic, P<*>, a=862.5(4) pm, b=1005.7(5) pm, c=1282.7(3) pm, alpha=106.54(3) deg, beta=94.86(3) deg, gamma=93.52(4) deg, Z=1, wR=0.073 for 2419 reflections with F>4?(F). 7: triclinic; P<*>, a=1047.4(2) pm, b=1068.0(1) pm, c=1442.4(2) pm, alpha=90.36(1) deg, beta=110.34(1) deg, gamma=113.32(1) deg, Z=2, R=0.0435 for 2241 reflections with F>4?(F).Keywords: Chromium, Cobalt; ?-Benzene complexes; mus-Ethylidyne; Structure

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Product Details of 12150-46-8. In my other articles, you can also check out more blogs about 12150-46-8

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Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

12150-46-8, Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene, molecular formula is C34H28FeP2. In a patent, introducing its new discovery.

ISOCHROMENE DERIVATIVES AS PHOSHOINOSITIDE 3-KINASES INHIBITORS

Compounds of formula (I) described herein are useful for inhibiting phosphoinositide 3-kinases (PI3K) and the treatment of disorders associated with PI3K enzymes.

12150-46-8, Consequently, the presence of a catalyst will permit a system to reach equilibrium more quickly, but it has no effect on the position of the equilibrium as reflected in the value of its equilibrium constant.I hope my blog about 12150-46-8 is helpful to your research.

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Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

12150-46-8. Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. 12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene,introducing its new discovery.

Gold(I) macrocycles and [2]catenanes containing sulfone-functionalised diacetylide ligands

The reaction of the polymeric digold(I) diacetylide [(AuCCCH2OC6H4)2 SO2]n with diphosphane ligands PP leads to the formation of either macrocyclic ring complexes [(AuCCCH2OC6H4)2 SO2(mu-PP)] or [2]catenanes [(AuCCCH2OC6H4)2 SO2(mu-PP)]2 by a self-assembly process. With the diphosphane ligands Ph2PCCPPh2, [Fe(C5H4PPh2)2 and Ph2P(CH2)nPPh2 (n = 4, 5 and 6), macrocyclic ring complexes result, but with the diphosphane ligand Ph2P(CH2)3PPh2, the [2]catenane selectively crystallises from an isomeric mixture of products. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003.

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Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

12150-46-8. Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene. In a document type is Article, introducing its new discovery.

Ruthenium(II) diphosphine/diamine/diimine complexes and catalyzed hydrogen-transfer to ketones

An in situ product, presumed to be RuCl2(DPPF)(PPh3), formed in CH2Cl2 from a 1:1 mixture of 1,1?-bis(diphenylphosphino)ferrocene (DPPF) and RuCl2(PPh 3)3, reacts with 1 equiv of a diamine or a diimine (N-N donors) dissolved in MeOH to generate RuCl2(DPPF)(N-N) complexes: N-N is ethylenediamine (en), N,N?-dimethyl(ethylenediamine) (dimen), 1,3-diaminopropane (diap), 2,2?-bipyridine (bipy), 1,10-phenanthroline (phen), and 1S,2S-diaminocyclohexane (1S,2S-dach). Diethylenetriamine (dien), a tridentate N-donor, generates a monochloro cationic complex. The isolated complexes are trans-RuCl2-(DPPF)(en) (1), trans-RuCl 2(DPPF)(dimen) (2), [RuCl(DPPF)(dien)]Cl (3), trans-RuCl 2(DPPF)(diap) (4), cis-RuCl2(DPPF)(bipy) (5), cis-RuCl2(DPPF)(phen) (6), and trans-RuCl2(DPPF)(1S,2S- dach) (7). The known complex trans-RuCl2(DPPB)(en) (8) was similarly made using RuCl(DPPB)2(mu-Cl)3 as precursor, where DPPB is 1,4-bis(diphenylphosphino)butane. Complexes 1, 2, 5, and 8 were characterized crystallographically. Complexes 1-8 are effective precursor catalysts in basic 2-propanol solutions for the hydrogen-transfer hydrogenation of acetophenone; the chiral phosphine system (7) gives only ?12% ee at high conversions to 1-phenylethanol, while at 25% conversion the ee reaches 36%. Greater activity for precursor catalyst 1 versus that of 2 qualitatively supports the “metal-ligand bifunctional” mechanism for such diphosphine/diamine systems; however, the “NH-free” diimine bipy and phen systems are as active at 80C as the diamine systems and must operate by a different mechanism. Complex 8 is also an effective precursor hydrogen-transfer catalyst for other alkyl-aryl and dialkyl ketones, which were used as model substrates for components of lignin; a substituted styrene was not hydrogenated.

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Reference£º
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene, belongs to chiral-phosphine-ligands compound, is a common compound. In an article, authors is Ahmed, Ajaz, once mentioned the new application about 12150-46-8.12150-46-8

Palladium catalysed carbonylation of 2-iodoglycals for the synthesis of C-2 carboxylic acids and aldehydes taking formic acid as a carbonyl source

Pd catalyzed carbonylative reaction of 2-iodo-glycals has been developed taking formic acid as a carbonyl source for the synthesis of 2-carboxylic acids of sugars by the hydroxycarbonylation strategy. The methodology was successfully extended to the synthesis of 2-formyl glycals by using a reductive carbonylation approach. Both ester and ether protected glycals undergo the reaction and furnished sugar acids in good yield which is otherwise not possible by literature methods. The C-2 sugar acids were successfully utilized for the construction of 2-amido glycals, 2-dipeptido-glycal by Ugi reaction and C-1 and C-2 branched glycosyl esters.

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Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate