61548-33-2

Usage

Uses

Used in Polymerization Catalysts:
(Isooctadecanoato-O)bis(methacrylato-O)(propan-2-olato)titanium is used as a catalyst or co-catalyst in the polymerization of acrylic and methacrylic monomers. Its application is crucial for the production of high-quality polymers with specific properties tailored for various end-use applications.
Used in Crosslinking Agents:
In the field of materials science, this titanium complex serves as an effective crosslinking agent. It helps in creating a network of chemical bonds between polymer chains, enhancing the mechanical properties, thermal stability, and durability of the final product.
Used in Adhesives and Coatings:
(Isooctadecanoato-O)bis(methacrylato-O)(propan-2-olato)titanium is also utilized as a component in the formulation of adhesives and coatings. Its presence improves the adhesion properties, durability, and resistance to environmental factors such as UV radiation and moisture.
Used in Photovoltaic Devices:
(isooctadecanoato-O)bis(methacrylato-O)(propan-2-olato)titanium has potential applications in the development of photovoltaic devices, where it can contribute to the efficiency and performance of solar panels by enhancing the charge transport and light absorption properties of the materials used.
Used in Electronic Devices:
Beyond photovoltaics, (isooctadecanoato-O)bis(methacrylato-O)(propan-2-olato)titanium may also find use in other electronic devices, where its unique properties can be harnessed to improve the performance of components such as sensors, transistors, and dielectric materials.

Upstream product

• 13287-42-8 (2-bromoethyl)oxirane 
• 996-82-7 sodium diethylmalonate 
• 64-17-5 ethanol 
• 821-11-4 trans-butene-1,4-diol 
• 33746-94-0 (2E)-4-bromobut-2-en-1-yl acetate 
• 106-99-0 buta-1,3-diene 
• 3425-61-4 tert-amyl hydroperoxide 
• 96039-67-7 4-acetoxy-3-chloro-1-butene 
• 67-56-1 methanol 
• 100-41-4 ethylbenzene 
• 930-22-3 epoxybutene 
• 138249-07-7 2-hydroxy-(2R)-3-butenyl-4-methyl-1-benzenesulfonate 
• 765-34-4 Glycidaldehyde 
• 1779-49-3 Methyltriphenylphosphonium bromide 

Relevant academic research and scientific papers

Heteropoly blue as a reaction-controlled phase-transfer catalyst for the epoxidation of olefins

A new reaction-controlled phase-transfer catalyst system has been designed and synthesized. In this system, heteropoly blue, [C7H 7N(CH3)3]3PMo4O 16, is used for the catalytic epoxidation of olefins with H 2O2 as the oxidant. In this system, the catalyst not only can be recovered, like heterogeneous catalyst, but also acts as a homogeneous catalyst. The main products are epoxide of olefins and H2O; no co-product forms. The system exhibits high conversion and selectivity as well as excellent catalyst stability. 31PNMR spectra, UV-vis spectra, and infrared spectra are used to analyze the reason for the phase transfer of the catalyst, indicating that the change of structure leads to the formation of reaction-controlled phase-transfer catalyst.

Use of oxygen-18 to determine kinetics of butadiene epoxidation over Cs-promoted, Ag catalysts

Kinetic isotope effect (KIE) data have been measured using 18O2 for butadiene epoxidation over Cs-promoted, supported Ag catalysts. These show that the rate-limiting step for butadiene epoxidation is dissociation of a molecular oxygen species (O2)-1 on a vacant Ag surface site. Comparisons have been made between the experimentally measured KIE values and calculated KIE values for reaction steps (other than O-O dissociation) involving bond-making or bond-breaking steps in which oxygen is involved. In all these instances the calculated KIE values are much lower than the KIE actually observed. This study marks the first instance where 18O2 has been used at steady-state olefin epoxidation conditions to confirm the nature of the oxygen active in olefin epoxidation. The O-18 results in this study also directly support the current belief that atomic oxygen, and not a molecular oxygen species, is the active form of oxygen that reacts with olefins to form olefin epoxides. Finally, comparison of the kinetics for butadiene epoxidation with the kinetics for ethylene epoxidation shows that the rate-limiting steps for the two reactions are different. For ethylene epoxidation, the surface reaction between adsorbed ethylene and adsorbed oxygen is considered to be the limiting step, while dissociation of molecular oxygen dissociation is rate limiting for butadiene epoxidation.

An Amphiphilic (salen)Co Complex – Utilizing Hydrophobic Interactions to Enhance the Efficiency of a Cooperative Catalyst

An amphiphilic (salen)Co(III) complex is presented that accelerates the hydrolytic kinetic resolution (HKR) of epoxides almost 10 times faster than catalysts from commercially available sources. This was achieved by introducing hydrophobic chains that increase the rate of reaction in one of two ways – by enhancing cooperativity under homogeneous conditions, and increasing the interfacial area under biphasic reaction conditions. While numerous strategies have been employed to increase the efficiency of cooperative catalysts, the utilization of hydrophobic interactions is scarce. With the recent upsurge in green chemistry methods that conduct reactions ‘on water’ and at the oil-water interface, the introduction of hydrophobic interactions has potential to become a general strategy for enhancing the catalytic efficiency of cooperative catalytic systems. (Figure presented.).

Enantioselective Radical-Polar Crossover Reactions of Indanonecarboxamides with Alkenes

Highly efficient asymmetric intermolecular radical-polar crossover reactions were realized by combining a chiral N,N′-dioxide/NiII complex catalyst with Ag2O under mild reaction conditions. Various terminal alkenes and indanonecarboxamides/esters underwent radical addition/cyclization reactions to afford spiro-iminolactones and spirolactones with good to excellent yields (up to 99 %) and enantioselectivities (up to 97 % ee). Furthermore, a range of different radical-mediated oxidation/elimination or epoxide ring-opening products were obtained under mild reaction conditions. The Lewis acid catalysts exhibited excellent performance and precluded the strong background reaction.

Precursor effect on the property and catalytic behavior of Fe-TS-1 in butadiene epoxidation

The effect of iron precursor on the property and catalytic behavior of iron modified titanium silicalite molecular sieve (Fe-TS-1) catalysts in butadiene selective epoxidation has been studied. Three Fe-TS-1 catalysts were prepared, using iron nitrate, iron chloride and iron sulfate as precursors, which played an important role in adjusting the textural properties and chemical states of TS-1. Of the prepared Fe-TS-1 catalysts, those modified by iron nitrate (FN-TS-1) exhibited a significant enhanced performance in butadiene selective epoxidation compared to those derived from iron sulfate (FS-TS-1) or iron chloride (FC-TS-1) precursors. To obtain a deep understanding of their structure-performance relationship, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Temperature programmed desorption of NH3 (NH3-TPD), Diffuse reflectance UV–Vis spectra (DR UV–Vis), Fourier transformed infrared spectra (FT-IR) and thermal gravimetric analysis (TGA) were conducted to characterize Fe-TS-1 catalysts. Experimental results indicated that textural structures and acid sites of modified catalysts as well as the type of Fe species influenced by the precursors were all responsible for the activity and product distribution.

3,4-epoxy-1-butene preparation method

The present invention relates to a 3,4-epoxy-1-butene preparation method. A purpose of the present invention is mainly to solve the problems of low raw material conversion rate, low product yield and serious waste in the prior art. The technical scheme co

Preparation, characterization and catalytic performance study of La-TS-1 catalysts

Lanthanum (La) was substituted into a titanium silicalite 1 (TS-1) framework via two different synthetic approaches, i.e., in situ hydrothermal synthesis and ultrasonic immersing methods. La inhibited Ti to enter into the TS-1 framework during in situ hydrothermal synthesis, and thus Ti erosion gave rise to poor catalytic activity for butadiene (BD) epoxidation. While catalysts prepared by an ultrasonic immersing method were testified as fine ones by mutually complementary characterization and catalytic tests. Extraframework-La and Si-OH caused by framework-La enhanced the acidity of TS-1. Adequate intensity of acidity aroused from 8 wt% La modified had activated H 2O2 for BD epoxidation rather than promoting the solvolysis reactions of the epoxide. Moreover, interactions between framework-La and the Ti active center via O weakened the [Ti-O] bond, which facilitated active intermediate formation. As a result, H2O2 conversion and utilization, along with vinyloxirane (VO) yield and TON were highly promoted with appropriate content of La modified.

Catalytic properties of heteropoly compounds in 1,3-butadiene oxidation with hydrogen peroxide

The homogeneous oxidation of 1,3-butadiene (BD) in H2O 2-HPC-CH3CN (HPC = heteropoly compound) solutions has been investigated. The route of the reaction depends on the nature of the metal capable of coordinating with active oxygen in the HPC. The products of radical BD oxidation (acrolein, 3-butene-1,2-diol, 2-butene-1,4-diol, furan) form in the presence of H3+n PMo12 - n V n O40 (n = 1, 2) acids. 3,4-Epoxy-1-butene (EB) and acrolein + furan, which form in equal amounts in the presence of the (n-Bu4N)5PW 11O39Fe(OH) salt, result, respectively, from the electrophilic addition of hydrogen peroxide to BD and from radical BD oxidation on iron-oxygen complexes in the HPC composition. The reaction carried out in the presence of (n-Bu4N)3{PO4[WO(O 2)2]4}, (n-Bu4N)5Na 0.6H1.4PW11O39, or (EMIm) 5NaHPW11O39 yields EB with high selectivity on the reacted BD basis (up to 97%) and H2O2 (about 100%). The formation and conversion of the phosphotungstate peroxo complexes PW n O m α- (n = 2, 3, 4) that are active in BD epoxidation have been investigated by 31PNMR spectroscopy. The role of the tetrabutylammonium and ethylmethylimidazolium cations in the formation of these complexes has been demonstrated.

The positive role of cadmium in TS-1 catalyst for butadiene epoxidation

A series of Cd modified titanium silicalite 1 catalysts with different Cd content (xCd-TS-1, x = 1-15) were successfully prepared by ultrasound impregnation. Epoxidation of butadiene over these catalysts were investigated using hydrogen peroxide as oxidant, which indicated that Cd greatly improve the catalytic performance of TS-1 and the selectivity of epoxide. Various characterization methods including quantum chemical calculation were employed to explore the specific roles of Cd in promoting TS-1 catalytic activity. Theoretical calculation consistently suggested TiO bond were weakened owing to the introduction of Cd, which resulted in the structure of Cd-TS-1 becoming more relaxant. As a consequence, it is favorable to methanol solvent and H 2O2 interacting with the Ti active site to form five-member transition state during reaction. It was observed that catalysts modified with 1-5 wt% Cd presented both high catalytic activity and good reusability. The highest yield of 0.63 mol/L of vinyloxirane (VO) was obtained, while turnover number (TON, determined as the molar VO obtained per molar Ti atom) could reach to 1466.

Epoxidation of butadiene over nickel modified TS-1 catalyst

Nickel modified Titanium silicalite 1 (TS-1) catalysts provided an environmentally benign and effective method for butadiene epoxidation. Certain loading of modified Ni in our system significantly promoted TS-1 catalytic activity. The product vinyloxirane