Tag: M.W:400-500

In an article, published in an article, once mentioned the application of 13406-29-6, Name is Tris(4-(trifluoromethyl)phenyl)phosphine,molecular formula is C21H12F9P, is a conventional compound. this article was the specific content is as follows.COA of Formula: C21H12F9P

Dual antitumor and antiangiogenic activity of organoplatinum(II) complexes

A library of over 20 cycloplatinated compounds of the type [Pt(dmba-R)LCl] (dmba-R = C,N-dimethylbenzylamine-like ligand; R being MeO, Me, H, Br, F, CF3, and NO2 substituents in the R5 or R4 position of the phenyl ring; L = DMSO and P(C6H4CF3-p)3) has been prepared. All compounds are active in both human ovarian carcinoma A2780 cells and cisplatin-resistant A2780cisR cells, with most of the DMSO platinum complexes exhibiting IC50 values in the submicromolar range in the A2780 cell line. Interestingly, DMSO platinum complexes show low cytotoxicity in the nontumorigenic kidney cell line BGM and therefore high selectivity factors SF. In addition, some of the DMSO platinum complexes effectively inhibit angiogenesis in the human umbilical vein endothelial cell line EA.hy926. These are the first platinum(II) complexes reported to inhibit angiogenesis at a close concentration to their IC50 in A2780 cells, turning them into dual cytotoxic and antiangiogenic compounds.

Do you like my blog? If you like, you can also browse other articles about this kind. COA of Formula: C21H12F9P. Thanks for taking the time to read the blog about 13406-29-6

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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

In an article, published in an article, once mentioned the application of 13991-08-7, Name is 1,2-Bis(diphenylphosphino)benzene,molecular formula is C30H24P2, is a conventional compound. this article was the specific content is as follows.Safety of 1,2-Bis(diphenylphosphino)benzene

Phosphine-catalyzed remote beta-C-H functionalization of amines triggered by trifluoromethylation of alkenes: One-pot synthesis of bistrifluoromethylated enamides and oxazoles

An unprecedented phosphine-catalyzed remote beta-C-H functionalization of amine derivatives triggered by trifluoromethylation of an alkene with Togni’s reagent was disclosed. This reaction proceeded through the highly selective and concomitant activation of an unactivated alkene and the beta-C sp 3-H bond of an amine derivative, providing bistrifluoromethylated enamides in excellent yields with good regio-, chemo-, and stereoselectivity. Furthermore, the newly developed one-pot protocol provides a facile and step-economical access to valuable trisubstituted 5-(trifluoromethyl)oxazoles. Mechanistic studies showed that this reaction may initiate with a novel phosphine-catalyzed radical trifluoromethylation of unactivated alkene via a phosphorus radical cation.

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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

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. 1034-39-5, C18H15Br2P. A document type is Article, introducing its new discovery., Recommanded Product: 1034-39-5

Melem- and melamine-derived iminophosphoranes

Iminophosphorane derivatives of s-triazine and tri-s-triazine, C 3N3(NPCl3)3 (1), [H 2C3N3NH2(NPPh3) 2]Br2 (2), [HC3N3NH 2(NPPh3)2]Br (3), C6N 7(NPCl3)3 (5), [HC6N 7(NPCl3)3]Cl (6) were obtained by the Kirsanov reaction of melamine (1-3) and melem (5 and 6) with halogenated phosphorus compounds. The products were characterized by FTIR and solution NMR spectroscopy as well as by single-crystal X-ray diffraction. Additionally, in order to investigate the electron density distribution in the s-triazine or s-heptazine systems combined with the phosphinimine group, and to understand the influence of protonation on the triazine and heptazine moieties, quantum chemical analyses of compounds 2, 3, 5 and 6 were performed. Furthermore, by reaction of 5 with phenol the compound C6N7(NP(OPh)3)3 (7) was obtained. Its potential application as a flame retardant was examined by the UL 94 flammability test.

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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

In an article, published in an article, once mentioned the application of 1034-39-5, Name is Dibromotriphenylphosphorane,molecular formula is C18H15Br2P, is a conventional compound. this article was the specific content is as follows.category: chiral-phosphine-ligands

DENDRIMERS AND METHODS OF PREPARING SAME THROUGH PROPORTIONATE BRANCHING

The present invention provides for monodispersed dendrimers having a core, branches and periphery ends, wherein the number of branches increases exponentially from the core to the periphery end and the length of the branches increases exponentially from the periphery end to the core, thereby providing for attachment of chemical species at the periphery ends without exhibiting steric hindrance.

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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. 657408-07-6, Name is Dicyclohexyl(2′,6′-dimethoxy-[1,1′-biphenyl]-2-yl)phosphine, molecular formula is C26H35O2P. In a Patent£¬once mentioned of 657408-07-6, Formula: C26H35O2P

Pyrimidine base ruthenium copper heteronuclear compound and its preparation method and application (by machine translation)

The invention relates to a pyrimidine base ruthenium copper heteronuclear compound, the compounds of the general formula:, wherein R is – H, – CH3 , – OCH3 , – CH2 CH3 , – CH2 CH2 CH3 Or – CH2 CH2 CH2 CH3 ; R1 Is – H or – CH3 ; L is a tertiary phosphine ligand; P is the diphosphine ligand. The compounds can be used as double-metal catalyst to catalyze the reaction of aryl carboxylic acids and olefins, synthetic preparation phthalide derivatives. (by machine translation)

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Formula: C26H35O2P. In my other articles, you can also check out more blogs about 657408-07-6

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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

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. 657408-07-6, C26H35O2P. A document type is Article, introducing its new discovery., name: Dicyclohexyl(2′,6′-dimethoxy-[1,1′-biphenyl]-2-yl)phosphine

Efficient general procedure to access a diversity of gold(0) particles and gold(I) phosphine complexes from a simple HAuCl4 source. Localization of homogeneous/heterogeneous system’s interface and field-emission scanning electron microscopy study

Soluble gold precatalysts, aimed for homogeneous catalysis, under certain conditions may form nanoparticles, which dramatically change the mechanism and initiate different chemistry. The present study addresses the question of designing gold catalysts, taking into account possible interconversions and contamination at the homogeneous/heterogeneous system’s interface. It was revealed that accurate localization of boundary experimental conditions for formation of molecular gold complexes in solution versus nucleation and growth of gold particles opens new opportunities for well-known gold chemistry. Within the developed concept, a series of practical procedures was created for efficient synthesis of soluble gold complexes with various phosphine ligands (R3P)AuCl (90-99% yield) and for preparation of different types of gold materials. The effect of the ligand on the particles growth in solution has been observed and characterized with high-resolution field-emission scanning electron microscopy (FE-SEM) study. Two unique types of nanostructured gold materials were prepared: hierarchical agglomerates and gold mirror composed of ultrafine smoothly shaped particles.

Interested yet? Keep reading other articles of 657408-07-6!, name: Dicyclohexyl(2′,6′-dimethoxy-[1,1′-biphenyl]-2-yl)phosphine

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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

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. 1034-39-5, C18H15Br2P. A document type is Patent, introducing its new discovery., Product Details of 1034-39-5

SYNTHESIS OF ENT-PROGESTERONE AND INTERMEDIATES THEREOF

The present invention relates to the synthesis of ent-progesterone and intermediates thereof.

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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. 13991-08-7, Name is 1,2-Bis(diphenylphosphino)benzene, molecular formula is C30H24P2. In a Article£¬once mentioned of 13991-08-7, COA of Formula: C30H24P2

Synthesis of multisubstituted olefins through regio- and stereoselective silylborylation of an alkynylboronate/chemoselective cross-coupling sequences

A highly regio- and stereoselective silylborylation of an alkynylboronate is disclosed. PhMe2Si-Bpin undergoes a Pd(OAc) 2/tOctNC-catalyzed syn-addition to the alkynylboronate to yield 1-phenyl-1-silyl-2,2-diborylethene with high regioselectivity. The product 1-phenyl-1-silyl-2,2-diborylethene is then chemoselectively arylated by Suzuki-Miyaura coupling to afford (Z)-1-silyl-2-borylstilbene derivatives. This approach is extended to the synthesis of a tetraarylated olefin with four different substituents.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.COA of Formula: C30H24P2. In my other articles, you can also check out more blogs about 13991-08-7

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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

In an article, published in an article, once mentioned the application of 13991-08-7, Name is 1,2-Bis(diphenylphosphino)benzene,molecular formula is C30H24P2, is a conventional compound. this article was the specific content is as follows.Application In Synthesis of 1,2-Bis(diphenylphosphino)benzene

Rhodium-Catalyzed Regiodivergent Hydrothiolation of Allyl Amines and Imines

The regiodivergent Rh-catalyzed hydrothiolation of allyl amines and imines is presented. Bidentate phosphine ligands with larger natural bite angles (betan ? 99), for example, DPEphos, dpph, or L1, promote a Markovnikov-selective hydrothiolation in up to 88% yield and >20:1 regioselectivity. Conversely, when smaller bite angle ligands (betan ? 86), for example, dppbz or dppp, are employed, the anti-Markovnikov product is formed in up to 74% yield and >20:1 regioselectivity. Initial mechanistic investigations are performed and are consistent with an oxidative addition/olefin insertion/reductive elimination mechanism for each regioisomeric pathway. We hypothesize that the change in regioselectivity is an effect of diverging coordination spheres to favor either Rh-S or Rh-H insertion to form the branched or linear isomer, respectively.

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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. 13406-29-6, Name is Tris(4-(trifluoromethyl)phenyl)phosphine, molecular formula is C21H12F9P. In a Article£¬once mentioned of 13406-29-6, Formula: C21H12F9P

Platinum group metal complexes of arylphosphine ligands containing perfluoroalkyl ponytails; crystal structures of [RhCl2(eta5-C5Me5){P(C 6H4C6F13-4)3}] and cis- and trans-[PtCl2{P(C6H4C6F 13-4)3}2]

The triarylphosphine ligands PPh3-x(C6H4C6F13-4) x, x = 1, 2 or 3, reacted with [{RhCl2(eta5-C5Me5)}2], [{RhCl-(CO)2}2], [{IrCl(COD)}2], [PdCl2(MeCN)2] or [PtCl2(MeCN)2] to yield the complexes [RhCl2(eta5-C5Me5)L] 1-3, trans-[RhCl(CO)L2] 4-6, trans-[IrCl(CO)L2] 7-9, trans-[PstCl2L2] 11-13 or cis-/trans-[PtCl2L2] 14-16 respectively. Spectroscopic studies and structural studies (EXAFS for 4-9, 11-15 and X-ray single crystal for 3 and 16) indicated that the aryl groups are fairly good insulators of the electronic influence of the perfluoroalkyl substituents whilst solubility studies indicated that at least six C6F13 units are necessary for preferential perfluorocarbon solvent solubility and that the type of metal complex is important, i.e. the Vaska’s analogues 6 and 9 are perfluorocarbon solvent soluble whereas the dichloride complexes 13 and 16 are not. Studies on the addition of dioxygen to 7-10 identified a stepwise reduction in rate following the introduction of the perfluoroalkyl ponytails.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Formula: C21H12F9P. In my other articles, you can also check out more blogs about 13406-29-6

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