Category: 14799-93-0

Koppenhoefer, B. published the artcileBackbone modification of Chirasil-Val: effect of nonpolar side chains on enantiomer separation in gas chromatography, Computed Properties of 14799-93-0, the publication is Chromatographia (1995), 40(11/12), 718-23, database is CAplus.

The polysiloxane backbone of the gas chromatog. phase Chirasil-Val has been modified by replacing one Me group per dialkylsiloxy unit by pentyl and hexyl groups, resp. The new phases offer the advantage of reduced polarities and softening points, while the separation factors (α) of enantiomeric pairs of N,O-trifluoroacetyl amino acid Pr esters show small but intriguing deviations from those determined on Chirasil-Val.

Chromatographia published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, Computed Properties of 14799-93-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Shimojima, Atsushi published the artcileSynthesis of Silylated Derivatives of a Layered Polysilicate Kanemite with Mono-, Di-, and Trichloro(alkyl)silanes, Product Details of C9H20Cl2Si, the publication is Chemistry of Materials (2001), 13(10), 3603-3609, database is CAplus.

Interlayer modification of a layered polysilicate kanemite was performed by silylation with mono-, di-, and trichloro(alkyl)silanes. The introduction of silyl groups into the interlayer region was confirmed by XRD, IR, ¹³C NMR, and ²⁹Si NMR. The layered structures of the silylated products were confirmed by swelling behavior upon adsorption of n-alkyl alcs. The amounts of attached alkylsilyl groups varied with the number of functional groups as well as the alkyl chain length in the silylating agents. The products modified with alkyltrichlorosilanes exhibited various interlayer structures due to the different arrangements and/or conformations of the alkyl chains, depending on the chain lengths. The BET surface areas were relatively large (up to ∼480 m² g^-1) when short-chain alkyltrichlorosilanes were used, and decreased substantially to nonporous structures with increasing chain length. In addition to the inherent six-membered rings in the single layered silicate sheets of kanemite, new five- and six-membered rings were formed onto the silicate frameworks when dichloro- and trichlorosilanes were used for silylation. This leads to a new method for constructing novel organosilicate nanomaterials utilizing layered silicates.

Chemistry of Materials published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C10H19NO3, Product Details of C9H20Cl2Si.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Fadeev, Alexander Y. published the artcileSelf-Assembly Is Not the Only Reaction Possible between Alkyltrichlorosilanes and Surfaces: Monomolecular and Oligomeric Covalently Attached Layers of Dichloro- and Trichloroalkylsilanes on Silicon, Application of Dichloro(methyl)(octyl)silane, the publication is Langmuir (2000), 16(18), 7268-7274, database is CAplus.

Si-supported alkylsiloxane layers were prepared by reaction of alkylmethyldichlorosilanes and alkyltrichlorosilanes with Si wafers under two conditions: (1) in the vapor phase and (2) in toluene in the presence of ethyldiisopropylamine. Covalent attachment of di- and trichlorosilanes to the surface of Si/Si oxide through Si_S-O-Si bonds occurs for the amine-catalyzed reactions. This sets apart this reaction from the self-assembly process that occurs in the reaction between certain trichlorosilanes and hydrated SiO₂ with no amine present. The thickness of the layers formed from dichloro- and trichlorosilanes (as assessed by ellipsometry) is on the order of the single mol. sizes and increases gradually with alkyl chain length. The thickness values are considerably smaller (by a factor of ∼0.75) than the length of the fully stretched alkyl chain, which argues for disordered structures of the monolayers. Dynamic advancing and receding contact angles for H₂O, methylene iodide, and hexadecane argue for interaction between the probe fluids and accessible silanol groups (Si-OH) on the surface. H₂O contact angles increase with alkyl chain length and level at θ_A/θ_R ≃103°/∼90° for relatively long alkyl chains (approx. C₆ and longer), indicating that these surfaces project disordered Me and methylene groups toward the probe fluid. N-Hexadecane and methylene iodide contact angles show more complex behavior, which is discussed. The vapor-phase reaction of di- and trichlorosilanes with Si wafers yields surfaces that depend dramatically on the alkyl chain of the silane. Alkylsilanes with short and medium chains form polymeric grafted layers with thicknesses ranging from a few nanometers for dichlorosilanes up to tens of nanometers for trichlorosilanes. The authors suggest a mechanism that involves polycondensation of chlorosilanes into 3-dimensional alkylsiloxanes in the presence of adsorbed H₂O. Dynamic advancing and receding contact angles of H₂O, methylene iodide, and hexadecane on these surfaces are consistently higher than for surfaces prepared in the liquid phase. Alkylsilanes with long alkyl moieties yield approx. monomol. layers that exhibit wettabilities similar to those for surfaces prepared in the liquid phase.

Langmuir published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, Application of Dichloro(methyl)(octyl)silane.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Lochmuller, C. H. published the artcileAn examination of chemically modified silica surfaces using fluorescence spectroscopy, Quality Control of 14799-93-0, the publication is Analytica Chimica Acta (1981), 130(1), 31-43, database is CAplus.

Aminated microparticulate silica gel was derivatized with the fluorescent tag, dansyl chloride, to produce a chem.-modified silica surface that could be examined by fluorescence spectroscopy; also a dansylated silica was further derivatized with various alkyl functionalities. The labeled silicas were introduced into solvents and solvent mixtures of different polarities and the emission spectra obtained were compared with the spectra of a model compound, n-propyldansylamide, in the same solvents. Residual amine groups, as well as unreacted silanol groups, produce a polar surface environment reflected in the emission maximum of the spectrum of the modified silica. The degree of residual surface polarity also appears to be a function of the aminopropylsilane reagents used.

Analytica Chimica Acta published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, Quality Control of 14799-93-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Shao, Dongyun published the artcilePreparation of polycarboxylic acid-functionalized silica supported Pt catalysts and their applications in alkene hydrosilylation, Recommanded Product: Dichloro(methyl)(octyl)silane, the publication is RSC Advances (2018), 8(36), 20379-20393, database is CAplus and MEDLINE.

A series of novel immobilized platinum catalysts was prepared by loading Pt onto silica particles modified with polycarboxylic acid groups such as diethylenetriaminepentaacetic acid (DTPA), nitrilotriacetic acid (NTA) and succinic acid (SA). The three modified heterogeneous Pt catalysts were characterized using IR spectroscopy (IR), transmission electron microscopy (TEM), XPS, energy dispersive X-ray spectroscopy (EDS) and at. absorption spectroscopy (AAS). The residual H₂PtCl₆ solutions were characterized using UV spectroscopy (UV). The polycarboxylic acid-functionalized silica supported Pt catalysts were used to catalyze alkene hydrosilylation and 1-hexene was chosen as a model alkene. The data indicated that the catalytic performance was strongly dependent on the properties of the polycarboxylic acid group bonded to the silica particles. Among them, DTPA-functionalized silica supported Pt (SiO₂-DTPA-Pt) showed the best catalytic activity and reusability. Furthermore, some hydrosilylation reactions between other linear alkenes (1-heptene, 1-octene, 1-decene, 1-do-decene, 1-tetra-decene, 1-hexa-decene, 1-octa-decene, styrene or cis-hex-2-ene), or ring type alkenes (norbornene) with methyldichlorosilane could be catalyzed in the presence of these three Pt catalysts. Their high activities were more than 90%, and their selectivities were more than 99%, which were apparently better than homogeneous Pt catalysts. In addition, reactions with cyclohexene were also successfully catalyzed by the Pt catalysts. These results indicate that the polycarboxylic acid-functionalized silica gel supported Pt catalysts have potential value in industrial hydrosilylation reactions.

RSC Advances published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C16H20N2, Recommanded Product: Dichloro(methyl)(octyl)silane.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Li, Laiming published the artcilePreparation and evaluation of a novel and high efficient boronic acid-substituted silica supported Pt catalyst, Formula: C9H20Cl2Si, the publication is Colloids and Surfaces, A: Physicochemical and Engineering Aspects (2019), 322-330, database is CAplus.

A smart design of transition metal nanocatalyst can efficiently improve its catalytic activity and use value. In this work, platinum (Pt) was successfully anchored to silica gel with phenylboronic acid group first time and formed nanoparticles (0.5-5 nm) which afforded a highly active supported catalyst for the hydrosilylation of olefins. The turnover number and regioselectivity in the reaction of methyldichlorosilane and 1-octene using 0.00000004 mol of the immobilized Pt catalyst approached 1,321,317 and 99% over 12 h. The corresponding hydrosilylation products in excellent yields and regioselectivities were obtained when we employed a broad range of terminal aliphatic olefins and methyldichlorosilane as substrates. The fully immobilized Pt nanoparticles could be recycled at least 10 runs without any obvious loss in catalytic activity.

Colloids and Surfaces, A: Physicochemical and Engineering Aspects published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, Formula: C9H20Cl2Si.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Lu, Xing published the artcileCatalytic Synthesis of Functional Silicon-Stereogenic Silanes through Candida antarctica Lipase B Catalyzed Remote Desymmetrization of Silicon-Centered Diols, Synthetic Route of 14799-93-0, the publication is European Journal of Organic Chemistry (2013), 2013(26), 5814-5819, database is CAplus.

Si-containing diols were synthesized and used in lipase-catalyzed remote desymmetrization. E.g., reaction of 3,3′-[methyl(phenyl)silanediyl]bis(3,1-phenylene)dimethanol with acetic anhydride in CHCl₃ in the presence of Candida antarctica lipase B gave 90% yield of 3-((3-(hydroxymethyl)phenyl)(methyl)(phenyl)silyl)benzyl acetate (78% ee). This synthetic method is valuable in the construction of optically active Si-stereogenic organosilicon compounds Good enantioselectivities of the remote desymmetrization was achieved with Candida antarctica lipase B (CAL-B) (up to 90:10 er).

European Journal of Organic Chemistry published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, Synthetic Route of 14799-93-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Song, Weiguo published the artcileDevelopment of Improved Materials for Environmental Applications: Nanocrystalline NaY Zeolites, Application of Dichloro(methyl)(octyl)silane, the publication is Environmental Science and Technology (2005), 39(5), 1214-1220, database is CAplus and MEDLINE.

Two nanocrystalline NaY samples were synthesized with Si/Al ratios of 1.8 and crystal sizes of 23 and 50 nm, resp. The synthesized NaY zeolites were characterized by powder X-ray diffraction, SEM, nitrogen adsorption isotherms, silicon solid-state magic angle spinning NMR and FTIR spectroscopy. A com. NaY sample was analogously characterized for comparison with the synthesized nanocrystalline NaY. FTIR spectroscopy of adsorbed pyridine was used to elucidate the adsorption sites on the different NaY samples. More Bronsted acid sites and more silanol sites were detected on the nanocrystalline NaY zeolites, relative to the com. NaY. The nanocrystalline NaY exhibited increased adsorption capacities for representative pollutant mols., such as toluene (�0%) and nitrogen dioxide (�0%), relative to com. NaY. Functionalization of nanocrystalline NaY was examined as a method for tailoring the properties of nanocrystalline zeolites for specific environmental applications through the control of zeolite properties, such as hydrophobicity.

Environmental Science and Technology published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C7H7ClN2S, Application of Dichloro(methyl)(octyl)silane.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Burkhard, C. A. published the artcileAlkylation of hydrochlorosilanes, HPLC of Formula: 14799-93-0, the publication is Journal of the American Chemical Society (1947), 2687-9, database is CAplus.

HSiCl₃ adds with ease to olefinic double bonds in the presence of peroxides or ultraviolet light; the reaction appears to proceed exclusively by the addition of the SiH bond. In general, 0.5 or 0.75 mole olefin was used with 1 mole of the chlorosilane and 0.013-0.026 mole of peroxide (30% Ac₂O₂ in o-C₆H₄(CO₂Me)₂ used unless otherwise indicated); this mixture was heated 4-24 hrs. at 70-100°. 1-Pentene and HSiCl₃ give 73% AmSiCl₃, b. 166-9°, and MeHSiCl₂ gives 37% pentylmethyldichlorosilane, b. 164-8°. 2-Pentene and MeHSiCl₂ give 71% 2-pentylmethyldichlorosilane, b₁₀₀ 100°. Cyclohexene and HSiCl₃ give 64% cyclohexyltrichlorosilane, b. 199°; iso-C₄H₈ and HSiCl₃ (tert-Bu perbenzoate as catalyst) give iso-BuSiCl₃, b. 136°. CH₂:CHSiCl₃ (I) and HSiCl₃ give 19% (CH₂SiCl₃)₂, b. 199°; this results in 3% yield from C₂H₂ (Bz₂O₂ as catalyst), I being postulated as an intermediate. CH₂:CHCH₂SiCl₃ and HSiCl₃ give 83% 1,3-bis(trichlorosilyl)propane, b₂₀ 111°. HSiCl₃ (135 g.) and 78 g. uninhibited PhCH:CH₂, heated 4 hrs. at 100°, give 70 g. of a glassy solid; alc.-NaOH gives no H, indicating that Si-C bonds had been formed.

Journal of the American Chemical Society published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, HPLC of Formula: 14799-93-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Rupprecht, Herbert published the artcileRegulation of drug release from micro- and mesoporous silicic acids. Part II. Effect of subsequent coating on release of drugs adsorbed on silicon dioxide, Product Details of C9H20Cl2Si, the publication is Pharmazeutische Zeitung (1980), 125(31), 1482-5, database is CAplus.

Codeine [76-57-3] desorption from SiO₂ was decreased by coatings of silicone oil, n-octylmethyldichlorosilane [14799-93-0], or polyphenylethoxysiloxane. These coatings decreased the effect of pH on drug delivery.

Pharmazeutische Zeitung published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, Product Details of C9H20Cl2Si.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics