Category: 1271-19-8

Chemistry is traditionally divided into organic and inorganic chemistry. Formula: C10Cl2Ti. The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 1271-19-8

The early-late heterobinuclear complexes Cp2M(mu-OPPh 2)2PdMe2 (M = Ti (1), Zr (2), and Hf (3)) were synthesized by the reaction of PdMe2(tmeda) (tmeda = Me2NCH 2CH2NMe2) with respective metallocene diphosphinite ligands Cp2M(OPPh2)2 prepared from Cp2MCl2 (M = Ti, Zr, and Hf) and LiOPPh2. The complexes 1-3 catalyzed the addition (hydrophosphinylation) of HP(0)Ph 2 to l-octyne to give mainly not the single-addition product n-Hex-CH=CHP(0)Ph2 (4a) or n-Hex-C{P(0)Ph2}=CH 2(4b) but the double-addition product n-Hex-CH{P(0)Ph 2}CH2P(0)Ph2 (5) at 40 C in low yields. The yield of 5 was, however, substantially improved to >95% for 2 and 3 when tertiary phosphine PR3 such as PMePh2 was added to the catalytic system. The stoichiometric reaction of the complexes 1-3 with the phosphorus substrate HP(0)Ph2 and PMePh2 afforded in situ the trinuclear complexes H(PMePh2)Pd(mu- OPPh2) 3M(mu-OPPh2)3PdH(PMePh2), which were found to exhibit the high catalytic activities similar to those of their parent complexes 1-3 in the presence of PR3 and were thus proposed to be a practical catalyst. On the basis of the above findings, simple mixtures of mononuclear Cp2MCl2 and PdMe2(tmeda) complexes together with PMePh2 could be used successfully as precatalysts for the double hydrophos- phinylation of l-octyne with HP(0)Ph2 to give satisfactory results comparable to those attained with the preorganized binuclear complexes 2 and 3 with PMePh2 added.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Related Products of 1271-19-8, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1271-19-8, Name is Titanocenedichloride, molecular formula is C10Cl2Ti. In a Article，once mentioned of 1271-19-8

Bis-isonitrile complexes Cp2M(CNR)2 (M = Ti, Zr), where RNC is the sterically hindered 2,6-dimethylphenyl isonitrile, can be prepared in high yield by reduction of Cp2MCl2 with magnesium in THF solution in the presence of the isonitrile. 1H NMR spectroscopy reveals that with the titanium complex dissociation of the isonitrile ligands takes place in solution.

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Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is traditionally divided into organic and inorganic chemistry. Safety of Titanocenedichloride. The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 1271-19-8

Sources of the reactive fragment Cp2Ti=CH2 react with a variety of late-transition-metal complexes containing mu-halides [Cl-MLn]2 to yield early-late binuclear complexes containing mu-CH2, and mu-Cl ligands. Complexes containing Rh, Ir, Pt, Pd, and Au have been prepared and characterized. The X-ray structure of the complex Cp2Ti-CH2-RhCl(COD) (COD = 1,5-cyclooctadiene) prepared from Cp2Ti-CH2C-(CH3)2-CH2 and [Cl-Rh(COD)]2 has been determined. Crystallographic data: space group Pbcm; Z = 4; a = 8.268 (2) angstrom, b = 16.409 (4) angstrom, c = 12.604 (3) angstrom; V = 1710 (1) angstrom3. The structure was refined to a final R of 0.069 and R3? of 0.048 for the 1061 reflections that had Fo>3?(Fo).

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Product Details of 1271-19-8, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 1271-19-8, Name is Titanocenedichloride, molecular formula is C10Cl2Ti. In a Article, authors is Fernandez-Mateos，once mentioned of 1271-19-8

A practical, brief, and diastereoselective synthesis of limonoid CDE fragments from a readily available starting material is described. The key step was the titanocene(iii)-promoted cyclization of unsaturated epoxylactones, readily prepared from alpha-cyclocitral. In this way, we confirm the viability of our procedure for the synthesis of a limonoid model with different functionalization patterns. We also report the antifeedant activity of epoxylactones 18 and 19, which show significant antifeedant activity against Spodoptera littoralis and Spodoptera frugiperda, two insect species with different feeding ecologies.

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Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Related Products of 1271-19-8, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1271-19-8, Name is Titanocenedichloride, molecular formula is C10Cl2Ti. In a Article，once mentioned of 1271-19-8

The silyl chloride complexes (eta5-C5H4SiMe3)2ZrCl (1) and Cp2MCl (M = Ti (2); Zr (3); Hf (4)) were prepared by reaction of the appropriate metallocene dichloride with a silyl lithium reagent.The X-ray crystal structures of 1 and 3 are described.Methylation of 1, 3, and 4 with Grignard reagents afforded (eta5-C5H4SiMe3)2ZrMe (5) and Cp2MMe (M = Zr (6); Hf (7)).Complex 1 is a catalyst for the dehydropolymerization of both PhSiH3 and nBu2SnH2 to relatively low molecular weight polymers.Whereas 3 and 4 do not react with carbon monoxide, 2 undergoes CO-induced reductive elimination to Cp2Ti(CO)2 and ClSi(SnMe3)3. Keywords: Silyl; Early transition metals; Polysilane; Zirconium; Stannyl; Carbonylation

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， COA of Formula: C10Cl2Ti, Which mentioned a new discovery about 1271-19-8

Oligosilyl-substituted alkyne complexes of group 4 metallocenes have been prepared by reaction of group 4 metallocene dichlorides with magnesium in the presence of the respective alkyne. Depending on the alkyne substitution pattern, either metallacyclopentadienes or metallocene alkyne complexes were formed. In order to suppress the oxidative coupling process, PMe3 was added to obtain the metallocene alkyne complex base adducts. The reaction of 1,4-bis[tris(trimethylsilyl)silyl]butadiyne with zirconocene caused the formation of a 1,4-bis[tris(trimethylsilyl)silyl]-substituted zirconacyclocumulene. Reactions of zirconacyclopentadienes with iodine proceeded to the expected 1,4-diiodobuta-1,3-dienes.

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Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， Product Details of 1271-19-8, Which mentioned a new discovery about 1271-19-8

A series of niobium catalysts for the selective epoxidation was synthesised by post-synthesis modification of a commercial silica, starting from niobocene dichloride through solventless organometallic precursor dry impregnation (OM-DI) or conventional liquid-phase grafting technique. OM-DI showed to be cheaper, more versatile, less time-consuming and avoided the use of environmentally unfriendly chlorinated solvents. Nb-SiO2 catalysts displayed an excellent performance in the epoxidation of limonene, using aqueous hydrogen peroxide as oxidant. Niobium-silica catalysts were obtained via OM-DI for the first time in this occasion. They showed conversions up to 78% and chemoselectivity to epoxide of 98%. An unexpected regioselectivity to exocyclic epoxide was also observed.

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Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， Quality Control of: Titanocenedichloride, Which mentioned a new discovery about 1271-19-8

Nine amide-functionalized titanocenyls have been synthesized and characterized by spectroscopic and analytical methods and the solid state structure of Cp(CpCO-NH-C6H4-OCF3)TiCl2 was determined by single crystal X-ray diffraction. X-ray analysis of Cp(CpCO-NH-C6H4-OCF3)TiCl2 showed that titanium is in a pseudo tetrahedral geometry and contains a Ti-O(amide) coordination. In principle, Ti-O coordination should provide more hydrolytic stability to the corresponding titanocenyls than titanocene dichloride. The cytotoxic activities of these amide-functionalized titanocenyls on HT-29 colon cancer cell line were determined by MTT assay to elucidate structure-activity relationship. All complexes were more cytotoxic than titanocene dichloride and there is no correlation between the para substituents on the phenyl ring and their cytotoxicities.

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Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, COA of Formula: C10Cl2Ti, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 1271-19-8, Name is Titanocenedichloride, molecular formula is C10Cl2Ti. In a Article, authors is Kaluza, Nora M.，once mentioned of 1271-19-8

A convergent synthesis of (-)-dehydro-3-O-methyl-C/D-cis-estradiol started from stereochemically defined substituted optically active 3-(2-arylethyl)-gamma-butyrolactones. Regioselective bromination of the anisyl moiety, reductive ring opening of the iodolactone, and protecting-group changes led to a Weinreb amide. This then underwent an intramolecular Grignard reaction closing the B-ring to give a tetralone with defined configuration. Introduction of C-11 through an allyl Grignard addition and subsequent ring-closing metathesis gave a tetrahydro phenanthrene derivative. Oxidation of the side-chain alcohol resulted in the key aldehyde group, and a final samarium-diiodide-mediated reductive D-ring annulation resulted in the generation of the target dehydro-C/D-cis-estradiol derivatives with high stereoselectivity. Structure elucidation was carried out using NOEDS (nuclear Overhauser enhanced differential spectroscopy) analysis on the one hand, and conversion into known 3-O-methyl-13beta-estradiols by double-bond hydrogenation on the other. Further efforts to use this estradiol synthetic strategy to generate more complex steroidal natural products and pharmaceutically interesting compounds are in progress.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Application of 1271-19-8, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 1271-19-8, Name is Titanocenedichloride, molecular formula is C10Cl2Ti. In a Article，once mentioned of 1271-19-8

A new method for the synthesis of dialkyl(ethyl)alanes by the reaction of EtAlCl2 with alpha-olefins in the presence of Mg and a catalytic amount of Cp2TiCl2 (Ti(OPri)4, Ti(OBun)4) in THF was developed.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI