Category: 1271-19-8

Chemistry is traditionally divided into organic and inorganic chemistry. Application In Synthesis 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

ADDITION VON VINYL- UND ALLYL-TITAN-BINDUNGEN AN ETHYLEN

Reaction of Cp2TiCl (1) with the alkylmagnesium halides 2a-2d, 2g (alkyl = Me, Et, Pr, iso-Pr, hexyl) and ethylene give bis(eta5-cyclopentadienyl)(eta3-1-methylallyl)titanium (3).Mechanistic investigations indicate that hydrogen transfer from ethylene either to the initially formed Cp2alkytitanium or to Cp2ethyltitanium, formed by betaH-elimination to Cp2titaniumhydride and addition to ethylene, leads to liberation of alkane or alkene and ethane and formation of Cp2vinyltitanium F as an intermediate.Insertion to ethylene (even below 0 deg C) into the vinyl-titanium bond of F leads to Cp23-butenyltitanium, which isomerizes to 3.Reaction of 3 at ca. 80 deg C with ethylene in toluene occurs in part with hydrogen transfer to give the butene isomers 4, 5 and F and in part with addition of the allyl-titanium bond to ethylene to give the 2,4-hexadiene isomers 6a-6c by betaH-elimination.The compounds 6a-6c are also formed in the catalytic codimerization of butadiene with ethylene in the presence of 3.This reaction has a regioselectivity of above 99percent.

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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

Monoazadiene complexes of early transition metals. 2. Syntheses and structures of titanium 1-aza-1,3-diene complexes and their reactions with ketones

The novel dark green or violet and air-sensitive 1-aza-1,3-diene titanocene complexes Cp2-Ti[N(R1)CH=C(R2)CH(Ph)] [R1 = t-Bu, R2 = H (7a); R1 = C6H4-4-Me, R2 = H (7b); R1 = c-C6H11, R2 = Me (7c)] were prepared by the complexation of the 1-aza-1,3-dienes 1a-c to the titanocene “Cp2Ti” generated in situ by reduction of Cp2TiCl2 with magnesium. The solid-state structure of 7c shows a bent azatitanacyclic ring with a fold angle of 130.9(4). A series of electron-deficient 14e 1-aza-1,3-diene titanium complexes CpTi[N(R1)CH=C(Me)-CH(Ph)]Cl [R1 = c-C6H11 (8a), t-Bu (8b), C6H4-2-Me (8c), C6H4-4-Me (8d)] has also been prepared by reduction of CpTiCl3 with magnesium in the presence of the 1-aza-1,3-dienes R1N=CHC(Me)=CH(Ph) 1c-f. These new complexes were isolated as air-sensitive brown (8a,b) or dark red (8c,d) crystals in 50-65% yield. The X-ray crystal structure of 8c revealed that the coordination geometry for the 1-aza-1,3-diene ligands has substantial sigma2,pi-eta4-metallacyclopent-4-ene character. The 1-aza-1,3-diene complexes 8a,c,d only exhibit supine geometry as confirmed by 1H NMR spectroscopy, while 8b exists in both the conventional supine geometry and the prone geometry, which is demonstrated by quite different 1H NMR chemical shift values. Addition of 8c to 1 equiv of acetophenone gives the seven-membered metallacyclic ring system CpTi[N(C6H4-4-Me)CH=C(Me)CH(Ph)C(Me)PhO] (9), whose structure has also been characterized by NMR spectral data and by X-ray diffraction analysis. In contrast to 8c, the 1-aza-1,3-diene titanocene complex Cp2Ti[N(C-C6H11)CH=C(Me)CH-(Ph)] (7c) does not react with acetophenone even at high temperatures. ? MAD is used as an acronym for 1-aza-1,3-dienes (monoazadienes) in general. In this paper we will use MAD when N-alkyl-(£)-cinnamaldimines (R1)N=CHC(R2)=CH(Ph) (R1 = t-Bu, C-C6H11; R2 = H, Me) or N-aryl-(E)-cinnamaldimines (R1 = C6H4-2-Me, C6H4-4-Me; R2 = H, Me) are meant.

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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, 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 Poonia, Kavita，once mentioned of 1271-19-8

A new class of uasymmetrical organotitaniuim(IV) and organozirconium(IV) complexes of biologically potent iigands derived from heterocyclic ketones and semicarbazide hydrochloride and 2-hydroxy-N-pheny) benzamide have been prepared by the microwave irradiations. The ligands act in monobasic bidentate manner with N?OH and O?OH as donor systems. The ligands and the resulting complexes of the type Cp2M(O?O) (N?O) (where M represents titanium or zirconium) are characterized by the elemental analysis, conductance measurements, molecular weight determinations and spectral studies. On the basis of the electronic, IR, 1H NMR and 13C NMR spectral studies, octahedral geometry has been proposed for the resulting complexes. The isolated products are coloured solids, soluble in methanol, DMF, DMSO and THF. A comparative study has been made between microwave assisted synthesis and the thermal synthesis. All the complexes and their parent ligands have been screened against a number of microbes and discussed with positive findings.

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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， Computed Properties of C10Cl2Ti, Which mentioned a new discovery about 1271-19-8

Synthesis and catalytic activity of camphor titanium complexes

Three new camphor-titanium complexes [TiClCp2L] (L = 1L, (1); 2L, (2) and 3LH (3)) were obtained through replacement of one chloride by a camphor-type ligand (1LH, 2LH, 3LH2 (3)) at the coordination sphere of [TiCl2Cp2]. Complexes 1 and 2 were structurally characterized by X-ray diffraction analysis showing that coordination occurs through the oxygen atom of the hydroxo group (1) with cooperative coordination of the nitrogen atom of the oxime complex in 2. Upon activation with MAO complexes 1 and 2 promote ethylene polymerization and ethylene/norbornene co-polymerization while compound 3 displays no catalytic activity for either one or the other process. At 50 C the catalytic activity complex of 2 (852 kgPE mol-1 h-1) for ethylene polymerization is higher than that of compound 1 (668 kgPE mol-1 h -1) which is similar to that of [TiCl2Cp2] (670 kgPE mol-1 h-1). The catalytic activity of complex 1 displays a higher dependence on the temperature than that of compound 2 which is attributed to the strength of the Ti-O bond that renders generation of the active site more difficult in 1. Compounds 1 and 2 are also active catalysts for co-polymerization of ethylene with norbornene affording copolymers with approximately 15 mol% of norbornene content. The microstructures of the polyethylenes and ethylene norbornene co-polymers were checked by NMR and their melting points were measured by DSC.

I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 1271-19-8, help many people in the next few years.Computed Properties of C10Cl2Ti

Reference：
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

Impact of Group 13 Metals on Cp2TiCl2 Reduction and Structural Characterization of Resulting Compounds

The aim of the current study was to examine the effects of group 13 metals on Cp2TiCl2 reduction in the presence of 2-methoxyethanol (MeOEtOH) or ethanol (EtOH) and the compositions of the resulting products. Direct reaction of Cp2TiCl2 and M [Al, Al (Fe contaminated), Ga, In] in toluene/alcohol for 2 h gave a new family of uncommon homo- and heterometallic compounds: [Cp2Ti2Al(mu,eta2-OEtOMe)4Cl2][Ti2(mu,eta2-OEtOMe)3(eta2-OEtOMe)2Cl4] (1), [Cp2Ti2Al(mu,eta2-OEtOMe)4Cl2]Cl (2), [Cp2Ti2Al(mu,eta2-OEtOMe)4Cl2][Cp2Ti(eta2-HOEtOMe)][FeCl4] (3), [Cp2Ti(eta2-HOEtOMe)][Ga2Cl6]0.25[Cl]0.5 (4), [Cp3Ti2(mu-OEt)2(OEt)][GaCl4] (5), [CpTi(mu,eta2-OEtOMe)Cl]2 (6), and [Cp3Ti2(mu,eta2-OEtOMe)(mu-OEtOMe)Cl] (7). The reaction with indium for 48 h resulted in isolation of [TiIn2(mu,eta2-OEtOMe)4(OEtOMe)2Cl4] (8), [In2(mu-OEtOMe)2(HOEtOMe)4Cl4]2 (9), and [Ti(OEtOMe)4] (10). The complexes were characterized using elemental analysis, IR and NMR spectroscopies, and, for 1-9, single-crystal X-ray diffraction. The use of metallic gallium and indium to reduce Cp2TiCl2 opens up a previously unexplored path that may provide access to novel and unique compounds.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.Safety of Titanocenedichloride, you can also check out more blogs about1271-19-8

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

Synthetic Route of 1271-19-8, 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. 1271-19-8, Name is Titanocenedichloride, molecular formula is C10Cl2Ti. In a Article，once mentioned of 1271-19-8

Synthesis, Conductivity, and Structure of a Novel Organic Conductor (TMET-STF)2ClO4. Coexistence of One- and Two-dimensional Donor Columns

An organic ?-donor TMET-STF (trimethylene(ethylenedithio)diselenadithiafulvalene) was synthesized using a method via a titanocene complex.The cation radical salt (TMET-STF)2ClO4 is metallic down to 22 K and shows an upturn of resistivity.Crystal structure analysis and band calculation indicate that this system contains two types of donor columns; the one is one-dimensional and the other is two-dimensional.

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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£¬ name: Titanocenedichloride, Which mentioned a new discovery about 1271-19-8

Mechanism of titanocene-mediated epoxide opening through homolytic substitution

The mechanism of titanocene-mediated epoxide opening was studied by a combination of voltammetric, kinetic, computational, and synthetic methods. With the aid of electrochemical investigations the nature of a number of Ti(III) complexes in solution was established. In particular, the distribution of monomeric and dimeric Ti(III) species was found to be strongly affected by the exact steric conditions. The overall rate constants of the reductive epoxide opening were determined for the first time. These data were employed as the basis for computational studies of the structure and energies of the epoxide-titanocene complexes, the transition states of epoxide opening, and the beta-titanoxy radicals formed. The results obtained provide a structural basis for the understanding of the factors determining the regioselectivity of ring opening and match the experimentally determined values. By employing substituted titanocenes even more selective epoxide openings could be realized, Moreover, by properly adjusting the steric demands of the catalysts and the substrates the first examples of reversible epoxide openings were designed.

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

Chemistry is traditionally divided into organic and inorganic chemistry. Product Details of 1271-19-8. 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

N-Donor ligand activation of titanocene for the Biginelli reaction via the imine mechanism

The remarkable activation of stable titanocene dichloride (Cp2TiCl2) was achieved using N-donor ligand urea in an alcoholic solvent, leading to the formation of a Ti(iv) species [(MeO)2Ti(NHCONH2)]+, the existence of which was verified by ESI-MS, ESI-MS/MS, and NMR. Catalyzed by the newly formed Ti(iv) species, a myriad of 3,4-dihydropyrimidin-2-(1H)-ones were produced via a three-component Biginelli reaction. Further mechanistic investigation indicated that the Biginelli reaction had taken place via the imine route.

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Reference£º
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£¬ Formula: C10Cl2Ti, Which mentioned a new discovery about 1271-19-8

Improved synthesis of the C-glucuronide/glycoside of 4-hydroxybenzylretinone (4-HBR)

Improvements in the synthesis of carbon-linked glucuronide/ glucoside conjugates of cancer chemopreventive retinoids have been achieved starting with 2,3,4,6-tetra-Obenzyl- D-glucopyranose. The revised approach demonstrates better yields, eliminates the use of an expensive, carcinogenic protecting group reagent, and avoids much painstaking chromatography. The new approach should allow synthesis of larger quantities of the agents for detailed animal and mechanistic studies.

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Reference£º
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

New Titanium(IV) Chloroacetates

New bis-chelated and di-cyclopentadienyl titanium(IV) derivatives of mono-, di- and tri-chloroacetic acids have been prepared from the respective dichlorotitanium compounds and sodium salts of chloroacetic acids.In the bis-chelated titanium dichloroacetates, the acetate groups act as unidentate moieties with chelating ligands remaining coordinated to titanium thereby retaining their octahedral-geometry.No evidence for the association of the molecule has been obtained.In the di-cyclopentadienyl derivaties, the acetate groups coordinate to titanium, showing their bidentate nature.

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