Catalysis by metal complexes. XII. Selective preparation of 1- and 2-trichlorosilyl-1-phenylethane by hydrosilylation

Čapka, M.; Svoboda, P.; Hetflejš, J.

doi:10.1135/cccc19733830

Cited by 25 publications

(5 citation statements)

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“…Since it has been well established that hydrosilations of vinyl silanes are particularly prone to giving a mixture of regioisomers, 11b, the hydrosilation of G2 ‘ -Vi 36 with HSiMeCl 2 was conducted in the presence of PPh 3 , which was expected to promote formation of the β-derivatives ∼SiCH 2 CH 2 SiMeCl 2 …”

Section: Resultsmentioning

confidence: 99%

Synthesis of Highly Charged Organometallic Dendrimers and Their Characterization by Electrospray Mass Spectrometry and Single-Crystal X-ray Diffraction

et al. 1998

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Four new carbosilane dendrimers terminated with 12, 24, 36, and 72 benzyl groups have been synthesized and characterized by matrix-assisted laser desorption/ionization−time-of-flight mass spectrometry. These dendrimers were capped with Cp*Ru+ to yield polycations containing charges of 12+, 24+, 36+, and 72+. The charged dendrimers comprise the largest such structures thus far characterized by electrospray ionization (ESI) mass spectrometry. Additionally, for the first time full resolution of individual isotopic distributions has been achieved using ESI FT-ICR techniques, thereby providing unambiguous confirmation of the charges and nuclearities of the dendrimers. The first-generation, ruthenium-containing dendrimer (G1-Ru 12 ) was also characterized by single-crystal X-ray diffraction. This polycation has a molecular volume significantly larger than any dendrimer thus far characterized by this technique.

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Section: Resultsmentioning

confidence: 99%

Synthesis of Highly Charged Organometallic Dendrimers and Their Characterization by Electrospray Mass Spectrometry and Single-Crystal X-ray Diffraction

et al. 1998

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“…Methyl vinyl SR (M n = 5.8 × 10 5 , vinyl% = 0.16%) obtained from Chenguang Chemicals (China) and NR obtained from Xihuang Chemicals (China) were used as the matrix composites. The compatibilizers were synthesized through hydrosilylation reactions . The syntheses of A, B, and C are shown in Scheme (a), and their side chain contents are shown in Table .…”

Section: Methodsmentioning

confidence: 99%

Effect of compatibilizers on the miscibility of natural rubber/silicone rubber blends

Zhang

et al. 2013

Polym Eng Sci

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In this study, the blending system of natural rubber (NR) and silicone rubber (SR) at 70/30 ratio was investigated. Two kinds of graft polymers, polysiloxane‐g‐octane with different grafted ratios (polymers A, B, and C) and polysiloxane‐g‐(3,7‐dimethyl‐6‐octylene) (polymer D), were designed and synthesized to serve as compatibilizers. Dynamic mechanical analysis and scanning electron microscopy analyses showed that the compatibilizers improved the compatibility between NR and SR, and resulted in improved mechanical properties. For example, the tensile strength of the blends with compatibilizer C was 11.7 MPa, whereas that of the blends without any compatibilizer was only 7.86 MPa. The larger the grafted ratios, the better the compatibilization effect of the graft polymer. The differences in compatibilization effects between non‐reactive (polysiloxane‐g‐octane) and reactive [polysiloxane‐g‐(3,7‐dimethyl‐6‐octylene)] compatibilizers can be attributed to their different chemical compositions. The crosslink density obtained from solid‐state nuclear magnetic resonance indicated that the reactive compatibilizer (polymer D) engaged in the crosslink reaction through the active vinyl at the side chains, which effectively inhibited the decreasing trend of the crosslink density caused by the addition of compatibilizers. POLYM. ENG. SCI., 54:355–363, 2014. © 2013 Society of Plastics Engineers

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“…The chlorodimethylalkylsilanes were synthesized through the traditional addition of chlorodimethylsilane to the unsaturated sulfide with hexachloroplatinic acid as catalyst in toluene . The purity was estimated through NMR spectra: 4-(phenylthio)butanodimethylchlorosilane bp 77−78 °C (0.04 Torr), purity 98%; 2-[4-(methylthio)phenyl]ethanodimethylchlorosilane bp 96−97 °C (0.04 Torr), purity 98%; (4-phenylthio)phenyldimethylchlorosilane bp 152−153 °C (0.04 Torr), purity 98%.…”

Section: Methodsmentioning

confidence: 99%

How To Freely Change the Polarity of the Stationary Phase in a Liquid Chromatographic Column

Andersson

Kaiser

1997

Anal. Chem.

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The concept of changing the polarity of the stationary phase in a liquid chromatographic column is developed. Three phases are presented which all contain a sulfur atom in the sulfide form. On oxidation of the sulfur atom with iodosobenzene in the packed column, a sulfoxide group is formed which is considerably more polar. This change can be performed in infinitesimally small steps and convert the phase from essentially unpolar to quite polar. The polarity change is reversible. The separation of several classes of compounds on these new phases in both the oxidized and the reduced forms is compared with that on traditional phases.

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Catalysis by metal complexes. XII. Selective preparation of 1- and 2-trichlorosilyl-1-phenylethane by hydrosilylation

Cited by 25 publications

References 0 publications

Synthesis of Highly Charged Organometallic Dendrimers and Their Characterization by Electrospray Mass Spectrometry and Single-Crystal X-ray Diffraction

Synthesis of Highly Charged Organometallic Dendrimers and Their Characterization by Electrospray Mass Spectrometry and Single-Crystal X-ray Diffraction

Effect of compatibilizers on the miscibility of natural rubber/silicone rubber blends

How To Freely Change the Polarity of the Stationary Phase in a Liquid Chromatographic Column

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