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Showing 1 to 20 of 33 for “"Organosilicon"”.
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Development of organosilicon cross-coupling reaction
Use of palladium catalyzed cross-couplings have found widespread use in the pharmaceutical industry and there is a significant ongoing effort to either improve or devise new synthetic strategies to help build complex biologically active compounds. This is a study for advancing the use of silanols …
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Organosilicon compounds as potential wood protecting agents
… wood modification technologies, treatments with organosilicon compounds were proposed. These chemicals proved to be suitable for the protection of other building materials like concrete and might therefore also be suited for wood. To be able to optimise the treatment process and perform quality …
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Reactive Intermediates in Carbon-Functional Organosilicon Reactions
Addition, substitution and reduction were observed to occur as competing processes in the reaction between vinyltrichlorosilane and isopropylmagnesium bromide, whereas only addition and reduction were observed in the reaction between vinyltrichlorosilane and tert-butylmagnesium chloride. …
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Chemical vapor deposition of organosilicon and sacrificial polymer thin films
… a wide array of applications from a variety of organosilicon and organic precursors. The structure and properties of thin films were controlled by varying processing conditions such as the method and power of precursor activation, pressure, flow rates, and substrate temperature. Systematic …
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Advanced covalent ceramics from organosilicon polymers for sustainable energy and environment
Controlled thermal degradation of the liquid-phase polymers of molecular precursor-derived ceramics offer them excellent engineering properties. Amorphous ceramic phase and resistance to crystallization up to 1400 °C, high-temperature stability, and intense photoluminescence are some of the …
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Some Reactions of Free Radicals and Grignard Reagents with Organosilicon Compounds
Considerable confusion exists in the literature concerning the reactivity of allylsilanes in radical addition reactions. The reactions of allylsilanes with radical addition reagents have been reexamined and contrary to a previous report it has been found that both carbon tetrachloride and …
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Chemical vapor deposition and functionalization of fluorocarbon-organosilicon copolymer thin films
… the underlying silicon substrate. Fluorocarbon-organosilicon copolymers are of interest for this application because they have the desirable attributes of both fluorocarbon and organosilicon polymers, such as low dielectric constant, thermal stability, and good adhesion to silicon. Chemical …
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Pulsed-plasma chemical vapor deposition of organosilicon thin films for dielectric applications
As semiconductor feature sizes decrease and feature density increases, the industry is facing the increasing challenge of finding materials that can meet the stringent demands of the next generation of devices. One of the most intense, as well as diverse, fields of research has been in the area of …
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Chemical vapor deposition of organosilicon composite thin films for porous low-k dielectrics
… enhanced chemical vapor deposition has produced organosilicon thin films with the potential use as low dielectric constant interconnect materials in microelectronic circuits. Both diethylsilane and octamethylcyclotetrasiloxane precursors were used, with oxygen and hydrogen peroxides oxidants …
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Transition Metal Organosilicon Compounds, Activation of Si-H and Si-C Bonds by Organometallic Complexes
Alkylation of W(OMe)3Cl3 with LiEt followed by addition of N,N,N',N'-tetramethylethylenediamine (tmed) gives the tungsten ethene/hydride complex [Li(tmed)]3[WH(C 2H4)4].
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The Stereochemistry of Organosilicon and Complex Inorganic Compounds: i.a Study of the Mechanism of a Nucleophilic Substitution Reaction on an Organosilicon Compound. Ii. The Partial Resolution of Racemic Propylenediamine Through an Optically Active Complex Inorganic Compound
Made available in DSpace on 2014-12-05T19:35:58Z (GMT). No. of bitstreams: 1 0009096.pdf: 3450031 bytes, checksum: dbde489183679109dfa2241d3b8a5694 (MD5) Previous issue date: 1954
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Chemical vapor deposition thin films as biopassivation coatings and directly patternable dielectrics
Organosilicon thin films deposited by pulsed plasma-enhanced chemical vapor deposition (PPECVD) and hot-filament chemical vapor deposition (HFCVD) were investigated as potential biopassivation coatings for neural probes. It was found that organosilicon films from identical precursors differ in …
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Performance of Acid-Gas Anaerobic Digestion for Minimization of Siloxane and Hydrogen Sulfide Produced in Biogas for Energy Recovery
Organosilicon compounds, which are heavily utilized in personal care products, are typically present, sometimes in high concentrations in the influent of wastewater treatment facilities. During anaerobic sludge digestion, these compounds volatilize and enter the methane gas recovery stream. As the …
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Synthesis of sila-analogs and silicon-containing derivatives of drugs and development and application of the Si-2,4,6-trimethoxyphenyl moiety as a novel protecting group in organosilicon chemistry
… as a novel, acid-labile protecting group in organosilicon chemistry. The synthesis of chlorotris(chloromethyl)silane and tris(chloromethyl)methoxysilane is described.
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Allelopathic effect of imperata cylindrica (L.) beauv. extracts on the germination of weeds
… including phenolic acid, fatty acids, and organosilicon compounds. Although phenolic acids [butyl phenol, phenyl 3-methylbut-2-enoate, p-coumaric acid, and p-coumaric acid methyl ester], fatty acids [phytol, methyl isohexadecanoate, palmitic acid, palmitic acid methyl ester, …
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Reaction sintered silicon nitride as a coating for carbon-carbon composites
… because of a larger thermal expansion mismatch. Organosilicon densification and metallic silicon sealing methods were studied as means of further increasing the oxidation resistance of the coating, and some improvement was noted when these methods were employed.
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Synthesis, characterisation and pharmacological evaluation of silicon-containing aminoquinoline organometallic complexes as antiplasmodial, antitumor and antimycobacterial agents
… modified in the lateral side chain with organosilicon moieties. Compounds 2.1 and 2.2 were further reacted with dinuclear halfsandwich transition metal precursors [Ru(Ar)(µ-Cl)Cl]i (Ar = 116 -p-iPrC6H4Me; 116 -C6H6; 116 -C6HsOCH2CH2OH), [Rh(COD)(µ-Cl)h, and [RhCp *{µ-Cl)Clh, to yield a …
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