Tag: M.W:300-400

Application of 240417-00-9. Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. Like 240417-00-9, Name is 2-Diphenylphosphino-2′-(N,N-dimethylamino)biphenyl. In a document type is Article, introducing its new discovery.

Spontaneous (DeltaG0 ca. -30 kJ mol-1) ion pairing occurs between zinc meso-tetrakis(4-sulfonatophenyl)porphyrin (ZnTSPP(4-)) and polycyclic quaternary salts in water.Upon excitation with visible light, these nonfluorescent ion pairs undergo rapid (<10 ps) electron transfer to form radical ion pairs which do not dissociate into separated radical ions.The rate of reverse electron transfer within a radical ion pair decreases with increasing size of the quaternary salt.This effect is sufficiently pronounced, in the extreme case, to produce a long-lived (tau ca. 70 ns) radical ion pair in which the reactants may be held together less tightly due to solvent penetration. If you are interested in 240417-00-9, you can contact me at any time and look forward to more communication.Related Products of 240417-00-9

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 402822-72-4, Name is (2′-Methyl-[1,1′-biphenyl]-2-yl)diphenylphosphine,molecular formula is C25H21P, is a conventional compound. this article was the specific content is as follows.COA of Formula: C25H21P

The invention discloses a novel monophosphine ligand preparation method. The process of the method is: a) to commercialization of biphenyl, pyrrole, yinyin duo or polymerization catalyst monophosphine ligand as raw materials, under protection of inert gas, in the organic solution, the participation of the inorganic base, to control the reaction temperature 70 – 150 C, raw materials with aromatic halogenated object through the price rhodium catalytic guide hydrocarbon activation reaction for the preparation of aryl-substituted biphenyl, pyrrole, or polymerization catalyst yinyin duo novel monophosphine ligand. This synthetic route has not seen the literature reports, and the cost of raw material; unit of simple operation, low equipment requirements, is suitable for the rapid construction of model monophosphine ligand library. (by machine translation)

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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 1038-95-5, An article , which mentions 1038-95-5, molecular formula is C21H21P. The compound – Tri-p-tolylphosphine played an important role in people’s production and life.

The reactions of 3,5-diethynylpyridine (Py(C=CH)2) with PPN[Au(acac) 2] (2.5:1; PPN = Ph3P=N=PPh3) or with [AuCl(SMe2)] and NEt3 (1:2:2) give respectively PPN[Au{C=C(Py)-C=CH}2] (1) and [Au2{mu-(C=C) 2Py}]n (2). Complex 2 reacts with monodentate ligands (1:2) or with 1,6-bis(diphenylphosphino)hexane (dpph, 1:1) to give neutral dinuclear complexes of the general formula [(AuL)2{mu-(C=C) 2Py}] (L = CN’Bu (3), PMe3 (4), PPh3 (5), PTo3 (To = CeH4Me-4) (6); Au2L 2 = Au2(mu-dpph) (7)). The reactions of 6 with the complexes [MCI] and TITfO (1:1:1) (TfO = CF3SO3) give the cationic trinuclear complexes [M{Py(C=CAuPTo3)2}]TfO (M = AuPTo3 (8), cis-PtCl(PPh3)2 (9)). The crystal structure of complex 6 has been determined.

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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

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1038-95-5, Name is Tri-p-tolylphosphine, molecular formula is C21H21P. In a Article，once mentioned of 1038-95-5, Recommanded Product: 1038-95-5

The reaction of square-planar rhodium(I) complexes of the general formula P(4-tolyl)//3)//2RhClB with H//2 has been investigated where B is P(4-tolyl)//3, pyridine, or tetrahydrothiophene. NMR studies confirm that in all cases the product geometry has the two hydrogens cis to each other and the two phosphines trans to each other. The rate of dissociation of pyridene from the hydride is reported and compared with that of phosphine dissociation. Thermodynamic data for activation of H//2 by the phosphine and tetrahydrothiophene adducts are reported. From this information metal-hydrogen bond strengths can be calculated and the influence of B on this quantity determined.

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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

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.78871-05-3, Name is Di(naphthalen-2-yl)phosphine oxide, molecular formula is C20H15OP. In a Patent，once mentioned of 78871-05-3, Recommanded Product: 78871-05-3

The invention provides a high-efficiency, high-selective synthesis of different substituted functional group containing two aryl methyl substituted organic phosphonic acid ester derivative of the method, it adopts the cesium carbonate as the catalyst, in order to P (O)- H compound with 4 – aryl – 2, 6 – di-tert-butyl – 2, 5 – cyclohexadiene – 1 – ketone compound as the reaction substrate, the reaction system by adding the organic solvent. The advantage of this method: cheap and easily obtained catalyst; the substrate has a high applicability; mild reaction conditions, safe and reliable; the resulting target product selectivity is close to 100%, yield is as high as 90% or more. The method solves the traditional synthesizing aryl methyl substituted organic phosphonate derivatives poor selectivity of the reaction, the reaction step is tedious, the productivity is low and needs to be used for the environment of a harmful reagent and the like, it has good industrial application prospect. The invention also provides a corresponding different substituted functional group containing two aryl methyl substituted organic phosphonic acid ester derivatives. (by machine translation)

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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 1038-95-5, An article , which mentions 1038-95-5, molecular formula is C21H21P. The compound – Tri-p-tolylphosphine played an important role in people’s production and life.

Two new mixed ligand-silver(i) complexes of the anti-inflammatory drug naproxen (naprH) and triphenylphosphine (tpp) or tri(p-tolyl)phosphine (tptp) of formulae {[Ag(tpp)3(napr)](H2O)} (1) and [Ag(tptp) 2(napr)] (2) have been synthesized and characterized by m.p., vibrational spectroscopy (mid-FT-IR), Raman, 1H-NMR, UV-Vis, ESI-MS spectroscopic techniques and X-ray crystallography. The complexes show high photo-sensitivity to UVC light. Photolysis of 1-2 was studied and the results showed monotonic degradation of the complexes with simultaneous triarylphosphine oxide formation. The complexes 1-2 were tested for their antiproliferative activity against human breast adenocarcinoma (MCF-7) cells. Complexes 1-2 were more active than cisplatin against cells. UVC light increases the effectiveness of complexes 1-2 on MCF-7 cells by 13% and 38% respectively. Due to the morphology of the MCF-7 cells, which were incubated with the complexes 1-2, the cell death was ascribed to apoptosis. Electrophoresis to genomic DNA of MCF-7 cells confirmed the apoptosis through DNA fragmentation. The binding affinity of 1-2 towards the intracellular molecules CT-DNA and lipoxygenase (LOX) was studied for the evaluation of the mechanism of cell death. Thus, the binding constants (Kb) of 1-2 towards CT-DNA calculated by UV-Vis spectra are 32.8 ± 8.5 × 104 (1) and 4.7 ± 1.8 × 104 (2) M-1, respectively. Changes in fluorescent emission light of ethidium bromide (EB) in the presence of DNA suggest intercalation or electrostatic interactions into DNA of both complexes 1-2 in the minor groove. The corresponding apparent binding constants (Kapp) of 1-2 towards CT-DNA calculated through fluorescence spectra are 2.9 ± 0.3 × 104 (1) and 1.6 ± 0.4 × 104 (2) M -1 respectively. Docking studies on DNA-complexes interactions show the binding of 1 in the major groove and the corresponding one of 2 in the minor one. Moreover, the influence of complexes 1-2 on the catalytic peroxidation of linoleic acid to hydroperoxylinoleic acid by the enzyme lipoxygenase (LOX) was kinetically and theoretically studied. Only 1 inhibits lipoxygenase activity (IC50 = 5.1 (1), >30 (2) muM). This journal is the Partner Organisations 2014.

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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 213697-53-1, Name is 2′-(Dicyclohexylphosphino)-N,N-dimethyl-[1,1′-biphenyl]-2-amine,molecular formula is C26H36NP, is a conventional compound. this article was the specific content is as follows.Safety of 2′-(Dicyclohexylphosphino)-N,N-dimethyl-[1,1′-biphenyl]-2-amine

Compounds of formula (I) 1or therapeutically acceptable salts thereof, are protein tyrosine kinase PTP1B inhibitors. Preparation of the compounds, compositions containing the compounds, and treatment of diseases using the compounds are disclosed.

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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

Related Products of 224311-49-3. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 224311-49-3, Name is 2′-(Di-tert-butylphosphino)-N,N-dimethyl-[1,1′-biphenyl]-2-amine

Provided is a fluoroboron compound which is highly safe and stable and is capable of forming a cyclic ether-fused ring by the intramolecular alkoxymethylation reaction, or a salt thereof. The compound can be synthesized by the intramolecular alkoxymethylation reaction of a fluoroboron compound represented by the formula (I) or a salt thereof in the presence of a metal catalyst. (wherein the moiety represented by the formula represents an aromatic ring; L represents a substituent such as a halogen atom; R represents a substituted or unsubstituted alkylene group having 1 or 2 carbon atoms; and M represents an alkali metal cation or the like, with the proviso that L and -R-OCH2BF3M are respectively located on contiguous carbon atoms on the aromatic ring, or in the case of a fused aromatic ring, on two carbon atoms adjacent to one carbon at the fused position).

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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

Reference of 1038-95-5. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 1038-95-5, Name is Tri-p-tolylphosphine

The starting complex trans- is prepared from trans- by treatment of the derived labile solvento cationic species trans-BF4 (solv = acetone or CH2Cl2) with NaBH4 in EtOH at 0 dec C.The hydridotriflouromethyl complexes trans- are obtained by reaction of trans-PtH(CF3)(PPh3)2> with 2 equivalents of phosphine, L, in n-heptane at room temperature.Similar exchange reactions between trans- and equivalent amounts of diphosphine, L-L = cis-Ph2PCH=CHPPh2, Ph2PCH2CH2PPh2, Me2PCH2CH2PMe2, or Ph2PCH2CH2CH2PPh2, lead to the formation of the corresponding compounds.The hydridotrifluoromethyl complexes with L-L = cis-Ph2PCH=CHPPh2 and Ph2PCH2CH2PPh2 can be prepared also by reaction of the parent chloro derivatives with NaBH4 in EtOH at room temperature.The mixed isocyanide-phosphine complexes are obtained by reaction of trans- with a three-fold excess of RNC in n-heptane at room temperature.All the hydridotrilfluoromethyl complexes are air-stable in the solid state and in solution.They were characterized by elemental analyses and i.r., (1)H, (19)F, and (31)P n.m.r. spectra.The data obtained for upsilon(PtH) and (1)J(PtH) in trans- have been used to compare the trans influence of CF3(1-) with other ? carbon donors, R, in trans- derivatives.The n.m.r.-based trans influence order is CF3(1-) > C6H5(1-) > C6H9(1-) > CH2CH2CN(1-) > CH2CH2CH2CN(1-) > CH3(1-) > CH2CN(1-) > Cl(1-), whereas the i.r.-based trans influence order is C6H9(1-) > CH2CH2CH2CN(1-) > C6H5(1-) = CH3(1-) > CF3(1-) > Cl(1-).The opposite position of CF3(1-) in the two series of trans influence has been explained by the different mechanism operating on (1)J(PtH) and upsilon(PtH).The first depends predominantly on the s character of the platinum hydrid orbital used in the Pt-H bond, while the second is sensitive also to electrostatic effects induced by the electronegative fluorine atoms.The (1)J(PtP) data for the same series of complexes gives the following order of cis influence: Cl(1-) > CH2CN(1-) > CF3(1-) = CH3(1-) = C6H5(1-) = CH2CH2CN(1-) > CH2CH2CH2CN(1-).From the spectra of trans- (X = CF3 or Cl), the effects of replacing two PPh3 ligands in trans- by L on upsilon(PtH) and (1)J(PtH) were measured.With the assumption that the cis effects are additive, the i.r. and n.m.r. parameters were correlated with the electronic chi and steric theta parameters of the phosphine ligands.

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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

1038-95-5, Name is Tri-p-tolylphosphine, molecular formula is C21H21P, belongs to chiral-phosphine-ligands compound, is a common compound. In a patnet, once mentioned the new application about 1038-95-5, Product Details of 1038-95-5

The treatment of the aquocation n+, n=0; L=CN, CH3COO, CF3COO and n=1; L=P(p-MePh)3, NCEt, NCPh, CNCy, dppm and <2(mu-L-L)>2+, L-L=bipy, dppm.The neutral cyanocomplex reacts with various electrophiles to give cationic isocyanide complexes containing the cation +, which have been isolated in low yields.Chemical behaviour and structural implications of IR and 1 H and 13 C NMR spectra are discussed.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Product Details of 1038-95-5. In my other articles, you can also check out more blogs about 1038-95-5

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