Tag: M.W:500-600

161265-03-8, Name is (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine), molecular formula is C39H32OP2, belongs to chiral-phosphine-ligands compound, is a common compound. In a patnet, once mentioned the new application about 161265-03-8, Application In Synthesis of (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine)

To bind or not to bind: Driven by the motivation to increase the (photo)stability of traditional Cu(I) photosensitizers, multidentate diimine ligands, which contain two additional donor sites, were designed. To this end, a systematic series of four 1,10-phenanthroline ligands with either OR or SR (R = iPr or Ph) donor groups at the 2 and 9 positions and their resulting hetero- and homoleptic Cu(I) complexes were prepared. In addition, the related Ru(II) complexes were also synthesized to study the effect of another metal center. In the following, a combination of NMR spectroscopy and X-ray analysis was used to evaluate the impact of the additional donor moieties on the coordination behavior. Most remarkably, for the homoleptic bis(diimine)copper(I) complexes, a pentacoordinated copper center, corresponding to a (4 + 1)-fold coordination mode, was found in the solid state. This additional binding is the first indication that the extra donor might also occupy a free coordination site in the excited-state complex, modifying the nature of the excited states and their respective deactivation processes. Therefore, the electrochemical and photophysical properties of all novel complexes (in total 13) were studied in detail to assess the potential of these photosensitizers for future applications within solar energy conversion schemes. Finally, the photostabilities and a potential degradation mechanism were analyzed for representative samples.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Application In Synthesis of (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine). In my other articles, you can also check out more blogs about 161265-03-8

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

Reference of 12150-46-8, An article , which mentions 12150-46-8, molecular formula is C34H28FeP2. The compound – 1,1-Bis(diphenylphosphino)ferrocene played an important role in people’s production and life.

Reaction of RuH2CO(PPh3)3 with tetrafluorosuccinic acid at 100C gave rise to the formation of the dinuclear bis(tetrafluorosuccinate)-bridged Ru(II) complex 2, containing two water ligands. Exchange of the PPh3 in complex 2 with various diphosphine ligands afforded a series of analogous complexes 3. Reaction of the latter with 1-phenylethanol at 130C or with 2-propanol/Et3N at room temperature furnished the dinuclear dihydrido-bridged Ru(II) complexes 4. Complexes 2 and 4 were characterized by X-ray diffraction analysis. Both bis(tetrafluorosuccinate)-bridged complexes 3 and dihydrido-bridged complexes 4 catalyze the acceptorless dehydrogenation of 1-phenylethanol to acetophenone and dihydrogen with good yields and excellent selectivity under relatively mild conditions in the absence of acid or base. A tentative catalytic cycle for the dehydrogenation of secondary alcohols by Ru(II) complexes of type 3 is presented.

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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. 12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene, molecular formula is C34H28FeP2. In a Article，once mentioned of 12150-46-8, Recommanded Product: 1,1-Bis(diphenylphosphino)ferrocene

Reaction of the arylpalladium complex [Pd(2-C6H4CH2OSi-t-BuMe2) (PPh3)2I] (9) with n-Bu4NF gave the oxapalladacycle dimer [Pd(2-C6H4CH2O)I(PPh3)]2 (7). Similarly, [Pd(2-C6H4CH2O)I(AsPh3)]2 (11) was obtained by reaction of the arylpalladium complex [Pd(2-C6H4CH2OSi-t-BuMe2) (AsPh3)2I] (10) with n-Bu4NF. The structure of dimer 7 was confirmed by single-crystal X-ray diffraction. Reaction of 7 or 11 with the bidentate ligands 1,1?-bis(diphenylphosphino)ferrocene and 1,10-phenanthroline gave the monomeric oxapalladacycle complexes 16 and 17. Complex 7 inserts tert-butyl isocyanide to form 1,1-dimethyl-N-1(3H)-isobenzofuranylidenethanamine (18). Reaction of [Pd(2-C6H4R)(PPh3)2X] (R = CHO, X = Br, 21; R = CO2H, X = Br, 24a; R = CO2H, X = I, 24b) with Ag2CO3 or Cs2CO3/AgBF4 afforded the tetrameric complex [Pd(2-C6H4CO2)(PPh3)]4 (22), whose structure was confirmed by X-ray diffraction.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.Recommanded Product: 1,1-Bis(diphenylphosphino)ferrocene, 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.

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. 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

Four kinds of metal carbonyl complexes with 1,1′-bis(diphenylphosphino)ferrocene (dppfe) are synthesized and their molecular structures are determined by single-crystal X-ray analyses.Crystal data for (eta5-CH3C5H4)Mn(CO)2dppfe (1), (eta5-CH3C5H4)Mn(CO)dppfe (2), 2(mu-dppfe) (3), and CH3CCo3(CO)7dppfe (4) are as follows: 1, Pbca, a=20.551(3), b=28.951(5), c=11.786(1) Angstroem, V=7012(2) Angstroem3, Z=8; 2, P21/n, a=18.682(5), b=20.495(4), c=9.750(2) Angstroem, beta=91.24(2) deg, V=3732(1) Angstroem3, Z=4; 3, A2/a(C2/c), a=18.978(5), b=15.293(4), c=16.513(5) Angstroem, beta=112.62(2) deg, V=4423.9(2) Angstroem3, Z=4; 4, PI<*>, a=13.031(2), b=15.338(2), c=11.583(2) Angstroem, alpha=99.13(2) deg, beta=98.35(2) deg, gamma=99.64(2) deg, V=2218.1(7) Angstroem3, Z=2; Mo Kalpha radiation; R=0.075, 0.084, 0.074, and 0.056 for 2639, 4219, 2575, and 6098 reflections, respectively.Dppfe functions as a monodentate ligand in 1 with the rotational angle 128.0 deg for two cyclopentadienyl rings, as a bidentate chelating ligand in 2 with the rotational angles 3.1 deg, as a bidentate bridging ligand (no metal-metal bond) in 3 with the rotational angle 180 deg, and as a bridging ligand (over metal-metal bond) in 4 with the rotational angle 69.6 deg, respectively; Mn-P=2.242(4) Angstroem (1), Mn-P=2.215(2) and 2.216(3) Angstroem (2), Mn-P=2.364(4) Angstroem (3), and Co-P=2.297(2) and 2.314(2) Angstroem (4).The two cyclopentadienyl rings of dppfe are slightly tilted (2.3-5.7 deg tilt angles in 1, 2, and 4) and are parallel in 3.The coordinated P atoms are significantly displaced from the cyclopentadienyl ring planes.From the comparison of these geometrical parameters, it is concluded that the rotation of the two cyclopentadienyl rings is a predominant factor to determine various coordination modes of dppfe rather than the tilt of the two rings and/or the deviation of the P atoms from the ring plane.The 57Fe Moessbauer spectra of this series of compounds show doublets with parameters (IS=0.50-0.52 mm s-1 relative to Fe, QS=2.22-2.35 mm s-1).Although isomer shifts are essentially constant, the quadropole splittings have a tendency to increase with the increase of the rotational angle of the two cyclopentadienyl rings. 1H and 31PNMR spectra are measured for all of these compounds.

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.

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

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, Recommanded Product: 12150-46-8

Phosphine ligands have been successfully used along with Cu(I) for several catalytic reactions, nevertheless these ligands were less explored relatively for carbene involved reactions owing to the formation of carbene-phosphine ylides. In this report we successfully used three different phosphine stabilized Cu(I) complexes (1-3) as catalysts for chemoselective carbene insertion into the N-H bond of different aromatic amines over the formation of olefin (carbene dimerized product). In order to understand the substrate scope, different alpha-diazo esters have been reacted with large number of amines and all the reactions produced reasonably good yields under normal experimental conditions (38 examples). All the carbene inserted products have been isolated by column chromatography and fully characterized using standard spectroscopic techniques without any ambiguities. Several control reactions have been conducted in order to understand the importance of the type of phosphine ligands used in the catalysts 1-3 and found that without these catalysts we observed less selectivity (more of olefin as the product over N-H inserted product) and low yield. From this present study, it can be noted that the rigid framework phosphine ligands would be the better choice for carbene chemistry. The results obtained from the current studies would inspire chemists to develop more novel Cu(I)-phosphine catalysts for carbene related reactions including asymmetric versions in the near future.

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

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 12150-46-8. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene

A series of new rhenium phosphine heptahydride complexes ReH7L2 (L2 = a chelating bidentate phosphine) have been synthesized and characterized by IR and 1H, 31P, and 13C NMR spectroscopy. The hydride resonances of ReH7(dppf) (1,dppf = 1,1′-bis(diphenylphosphino)ferrocene), ReH7dppb) (2, dppb = 1,4-bis(diphenylphosphino)butane),and ReH7(+)-diop| (3, (+)-diop = (4S,5S)-4,5-bis((diphenylphosphino)methyl)-2,2-dimethyl-1,3-dioxolane) undergo decoalescence upon cooling. The low-temperature hydride patterns suggest classical 9-coordinate tricapped trigonal prismatic structures. Consistent with the classical structures, 1H NMR spectra of deuterated ReH7L2 complexes show very small and temperature-independent upfield isotope shifts in the hydride region and no change in VHP- Sequential treatment of 1, 2, and 3 with NaH and Mc2SO4 in the presence of Ph3SiH leads to ReH6(SiPh3)L2 (L2 = dppf, dppb, (+)-diop). Variable-temperature 1H NMR studies of these silyl derivatives provide further support for the classical formulation of their parent heptahydrides. Theoretical 7, (min) values are calculated for some polyhydrides on the basis of different structural models and are compared with the experimental numbers. Precautions to be taken in interpreting T1 data are discussed.

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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. 12150-46-8, C34H28FeP2. A document type is Article, introducing its new discovery., Recommanded Product: 1,1-Bis(diphenylphosphino)ferrocene

The rhodium-catalyzed, highly N2- and N1-selective coupling of benzotriazoles with allenes is reported. The exceptionally high N2 and N1 selectivities were achieved by using a rhodium(I)/DPEphos and rhodium(I)/JoSPOphos catalyst, respectively. This method permits the atom-economic synthesis of valuable branched N2- and N1-allylated benzotriazole derivatives and allows for preliminary studies of their reactivity.

Interested yet? Keep reading other articles of 12150-46-8!, Recommanded Product: 1,1-Bis(diphenylphosphino)ferrocene

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. 166330-10-5, Name is (Oxybis(2,1-phenylene))bis(diphenylphosphine), molecular formula is C36H28OP2. In a Patent，once mentioned of 166330-10-5, HPLC of Formula: C36H28OP2

The invention relates to a kind of the following formula (III) is shown two aryl-substituted pyridine derivatives of the synthetic method, said method comprising: in the organic solvent, the catalyst, phosphine, in the presence of alkali and accelerator, the following formula (I) compounds of the following formula (II) compound and the reaction, so as to obtain the compound (III), Wherein R1 C is H or1 – C6 Alkyl; R2 For C1 – C6 Alkyl, C1 – C6 Alkoxy, cyano or halogen; X is halogen. The method through the catalyst, ligand, alkali, organic solvent or the like of the accelerator and the comprehensive selective coordination with the, thus can yield to obtain the target product, in the field of organic chemical synthesis especially medical intermediate synthesis field has good application prospect and a wide range of industrial production potential. (by machine translation)

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.HPLC of Formula: C36H28OP2. In my other articles, you can also check out more blogs about 166330-10-5

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

161265-03-8, Name is (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine), molecular formula is C39H32OP2, belongs to chiral-phosphine-ligands compound, is a common compound. In a patnet, once mentioned the new application about 161265-03-8, Safety of (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine)

PROBLEM TO BE SOLVED: To provide a metal complex which can be produced at a lower cost than platinum group metal complexes and is high in light-emitting quantum efficiency in a state that the complex is dispersed in a host material used for organic EL elements.

SOLUTION: There is provided the silver complex represented by formula (1) (wherein, Z is an anion; two R1s are both H or bound to each other to form -CH=CH-; four Ar1s are each identically or differently an aromatic group).

COPYRIGHT: (C)2012,JPO&INPIT

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Safety of (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine). In my other articles, you can also check out more blogs about 161265-03-8

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. 161265-03-8, C39H32OP2. A document type is Patent, introducing its new discovery., Product Details of 161265-03-8

The invention discloses compounds of formula ( II ): and methods of making the compounds, which are VR1 antagonists that are useful in treating pain, inflammatory thermal hyperalgesia, urinary incontinence and bladder overactivity.

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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