- Diphenylchlorosilanes preparation containing phenyl vinyl organic silicon sealed end medicinal preparation method
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The invention discloses a method for preparing an organic silicon end-capping reagent containing phenyl vinyl by using a grignard method. The method is characterized by comprising the following steps: (1) reacting chlorobenzene or bromobenzene with magnes
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Paragraph 0035; 0036
(2018/11/03)
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- An Efficient Catalytic Route for the Synthesis of Silane Coupling Agents Based on the 1,1,3,3-Tetramethyldisiloxane Core
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We report herein the study of the selective mono-functionalization of 1,1,3,3-tetramethyldisiloxane (TMDSO) with vinyl-substituted silicon derivatives through the hydrosilylation reaction. An investigation of the use of platinum- and rhodium-based catalysts in the reactions between TMDSO and exemplary vinyl-containing silicon derivatives has enabled us to identify the most efficient catalyst, the application of which led to the selective partial functionalization of the disiloxane reagent and the simultaneous formation of only β regioisomers.
- Januszewski, Rafa?,Kownacki, Ireneusz,Maciejewski, Hieronim,Marciniec, Bogdan,Szymańska, Anna
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p. 851 - 856
(2017/02/15)
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- COMPOSITION FOR RESIST UNDERLAYER FILM AND PROCESS FOR PRODUCING SAME
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A composition for a resist underlayer film is provided. The composition has excellent storage stability and can form a resist underlayer film which has excellent adhesion to a resist film, can improve reproducibility of a resist pattern and is resistant to an alkaline liquid used in development and to oxygen asking during the removal of a resist. The composition comprises a hydrolyzate and/or a condensate of a silane compound of the following formula (A), [in-line-formulae]R1bR2cSi (OR3)4-a??(A)[/in-line-formulae] wherein R1 is a monovalent organic group having at least one unsaturated bond, R2 individually represents a hydrogen atom, a halogen atom or a monovalent organic group, R3 individually represents a monovalent organic group, R1 is a group other than OR3, a is an integer of 1 to 3, b is an integer of 1 to 3, and c is an integer of 0 to 2, provided that a=b+c.
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- Convenient synthesis of alkoxyhalosilanes from hydrosilanes
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Selective dehydrogenative coupling of di- and trihydrosilanes with alcohols catalyzed by PdCl2 or NiCl2 afforded alkoxyhydro- and dialkoxyhydrosilanes in good yield. Further treatment of the resulting alkoxyhydrosilanes with carbon tetrachloride or allyl bromide in the presence of the same catalyst led to the formation of alkoxychloro- and alkoxybromosilanes, respectively. Similar reactions of dialkoxyhydrosilanes with carbon tetrachloride afforded dialkoxychlorosilanes in good yield, although contamination of small amounts of trialkoxysilanes and alkoxydichlorosilanes was detected in the products. Selective substitution of the alkoxyhalosilanes with nucleophiles is also reported.
- Ohshita, Joji,Taketsugu, Ryosuke,Nakahara, Yuki,Kunai, Atsutaka
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p. 3258 - 3264
(2007/10/03)
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