Category: 84127-04-8

Related Products of 84127-04-8, An article , which mentions 84127-04-8, molecular formula is C14H15O2P. The compound – Bis(4-methoxyphenyl)phosphine played an important role in people’s production and life.

Bis(phosphine) pincer-Pd complex-catalyzed asymmetric addition of diarylphosphines to N-tosylimines was developed for the synthesis of chiral phosphine sulfides with high stereoselectivities (up to 96% ee) under mild conditions.

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Reference：
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. 84127-04-8, Name is Bis(4-methoxyphenyl)phosphine, molecular formula is C14H15O2P. In a Article，once mentioned of 84127-04-8, Recommanded Product: 84127-04-8

Figure Persented: Chiral 3-(2?-imidazolinyl)anilines 3a-c were easily synthesized by converting the carboxyl and nitro groups in commercially available 3-nitrobenzoic acid to chiral imidazoline and amine, respectively. The one-pot phosphorylation/metalation reaction of 3-(2?-imidazolinyl) anilines 3a-c, where the amino group in 3a-c was first phosphorylated by reaction with PPh2Cl, followed by metalation with PdCl2 or anhydrous NiCl2 in situ, afforded the three unsymmetrical chiral PCN pincer Pd(II) complexes 4a-c and the Ni(II) complex 5a with aryl-based aminophosphine-imidazoline ligands via aryl C-H bond activation of the related ligands. All of the new compounds were characterized by elemental analysis (HRMS for ligand precursors), 1H and 13C NMR, 31P{1H} NMR (for pincer complexes), and IR spectra. The molecular structures of Pd complexes 4a,c and that of Ni complex 5a have been determined by X-ray single-crystal diffraction. Each complex adopts a typical distorted-square-planar geometry. The potential of the obtained chiral pincers in the asymmetric addition of diarylphosphines to beta-substituted enones or trans-beta-nitrostyrene was investigated. The Pd pincer 4c, the chirality of which originated from l-phenylglycinol, was found to be an effective catalyst for the asymmetric addition of diphenylphosphine to a series of beta-aryl enones with high enantioselectivities (12 examples, 51-94% ee’s). In particular, excellent yields and enantioselectivities (>90% yields and ?90% ee’s) were obtained when beta-aryl groups in the enones bore an electron-withdrawing group such as p-NO2.

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Reference：
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

Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 84127-04-8, C14H15O2P. A document type is Article, introducing its new discovery., Safety of Bis(4-methoxyphenyl)phosphine

1,1?-[(1R)-1-Diarylphosphino-1,3-propanediyl]ferrocenes, where aryl = phenyl, 2-tolyl, 4-tolyl, mesityl, 4-anisyl, 4-(trifluoromethyl)phenyl, were prepared as new chiral ferrocenophane phosphines featuring only central chirality in good yields by the reaction of the corresponding chiral alcohol, 1,1?-[(1R)-1-hydroxy-1,3-propanediyl]ferrocene, and diarylphosphines in the presence of chlorotrimethylsilane and sodium iodide. These phosphines were studied as ligands in palladium(II) complexes and further evaluated in two mechanistically different model catalytic reactions, namely in Pd-catalyzed asymmetric allylic alkylation of 1,3-diphenylallyl acetate with dimethyl malonate, and in enantioselective aza-Morita-Baylis-Hillman reactions of aromatic N-sulfonyl imines with methyl vinyl ketone.

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Reference：
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

Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 84127-04-8, C14H15O2P. A document type is Article, introducing its new discovery., Formula: C14H15O2P

New Cs-symmetric aryl 1,4-diphosphine ligands were synthesized and tested in the copolymerization of carbon monoxide and propene. The electronic properties of the two different P-atoms did not affect the high enantioselectivity of the catalyst precursors, thus resulting in high ‘regio’- and ‘stereoregular’ copolymers.

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Reference：
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

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Palladium-catalyzed asymmetric 1,6-addition of diarylphosphines to electron-deficient dienes was developed through rational selection of electron-withdrawing groups on the dienes. Various chiral allylic phosphine derivatives were synthesized in good yields with high enantioselectivity (up to 96% ee).

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Reference：
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

Application of 84127-04-8, An article , which mentions 84127-04-8, molecular formula is C14H15O2P. The compound – Bis(4-methoxyphenyl)phosphine played an important role in people’s production and life.

The reactivity of homoleptic alpha-metalated dimethylbenzylamine lanthanide complexes (alpha-Ln(DMBA)3; Ln = La, Y; DMBA = alpha-deprotonated dimethylbenzylamine) was probed through a series of stoichiometric insertion and catalytic hydrophosphination reactions. Both rare-earth-metal species inserted 3 equiv of various carbodiimides to form the corresponding homoleptic amidinates. alpha-La(DMBA)3 was also found to be a useful precatalyst for the room-temperature hydrophosphination of heterocumulenes to form phosphaguanidines, phosphaureas, and phosphathioureas in moderate to excellent isolated yields. Furthermore, through a series of stepwise stoichiometric protonation and insertion reactions, a plausible mechanism for the hydrophosphination catalysis was investigated.

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Reference：
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

Synthetic Route of 84127-04-8, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 84127-04-8, C14H15O2P. A document type is Patent, introducing its new discovery.

The present invention relates to a P chiral pincer compound (II) and a palladiumcoordination compound (I) thereof, and synthesis methods of the two compounds. According to the present invention, the palladium coordination compound (I) (wherein X represents -Cl, R represents hydrogen atom or C1-C4 alkyl, and the chiralities of the two P are simultaneously R configurations or S configurations) is synthesized through a coordination reaction of the compound (II) and a divalent palladium salt; the palladium coordination compound (I) (wherein X is selected from -Br, -I, -OAc, -OTf, -BF4 and -SbF6) is synthesized through an anion exchange reaction of the palladium coordination compound (I) with the X represented by -Cl; and the palladium coordination compound (I) of the present invention can be adopted as the chiral catalyst so as to be used in a variety of asymmetric reactions such as asymmetric Micheal addition, asymmetric Heck coupling reactions, asymmetric Suzuki-Miyaura coupling reactions, asymmetric allylation reactions and the like. The formulas (I) and (II) are defined in the instruction.

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Reference：
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

84127-04-8, Name is Bis(4-methoxyphenyl)phosphine, molecular formula is C14H15O2P, belongs to chiral-phosphine-ligands compound, is a common compound. In a patnet, once mentioned the new application about 84127-04-8, Recommanded Product: 84127-04-8

We developed a method that involved an asymmetric conjugate addition of secondary phosphines to alpha,beta-unsaturated enones bearing beta-2-pyridyl substituents catalyzed by a PCP pincer-Pd complex. The technique was established for the preparation of chiral P,N-compounds in excellent enantioselectivity (up to 99% ee) under mild conditions.

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Reference：
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

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Chiral diphosphine ligands analogous to bdpp have been synthesized and tested in order to study the effect of the electronic nature of the ligands in Rh-catalyzed asymmetric hydrogenation of some prochiral olefins. The results are compared with those obtained with the analogous unsubstituted ligand (bdpp). The rhodium-catalyzed asymmetric hydrogenation of olefins was influenced by ligand-based electronic effects, as well as substrate based ones. Excellent ee’s (up to 98.3%) have been obtained in the rhodium-catalyzed hydrogenation of (Z)-alpha-acetamidocinnamic acids and esters.

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Reference：
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

In an article, published in an article, once mentioned the application of 84127-04-8, Name is Bis(4-methoxyphenyl)phosphine,molecular formula is C14H15O2P, is a conventional compound. this article was the specific content is as follows.COA of Formula: C14H15O2P

Ru(II)-Catalyzed Amination of Aryl Fluorides via eta6-Coordination

We developed a Ru/hemilabile-ligand-catalyzed nucleophilic aromatic substitution (SNAr) of aryl fluorides as the limiting reagents. Significant ligand enhancement was demonstrated by the engagement of both electron-rich and neutral arenes in the SNAr amination without using excess arenes. Preliminary mechanistic studies revealed that the nucleophilic substitution proceeds on a eta6-complex of the Ru catalyst and the substrate, and the hemilabile ligand facilitates dissociation of products from the metal center.

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Reference：
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