Highly Selective Oxidation of Organosilanes to Silanols with Hydrogen Peroxide Catalyzed by a Lacunary Polyoxotungstate
作者:Ryo Ishimoto、Keigo Kamata、Noritaka Mizuno
DOI:10.1002/anie.200904694
日期:2009.11.9
Silanol synthesis: Divacant lacunary polyoxotungstate (nBu4N+)4[γ‐SiW10O34(H2O)2] (I) is an efficient homogeneous catalyst for highlyselectiveoxidation of organosilanes to silanols with 30–60 % aqueous H2O2. Various kinds of silanes 1 containing aryl, alkyl, alkenyl, alkynyl, and alkoxy groups are chemoselectively converted into the corresponding silanols 2 in high yields with only one equivalent
硅烷醇合成:Divacant缺位polyoxotungstate(Ñ卜4 Ñ +)4 [γ-硅钨酸10 ø 34(H 2 O)2 ](我)是一种有效的均相催化剂用于向硅烷醇的有机硅烷的高度选择性氧化用30-60%含水H 2 O 2。含有芳基,烷基,烯基,炔基和烷氧基的各种硅烷1仅以一当量的H 2 O 2水溶液就可以高选择性地化学选择性转化为相应的硅烷醇2。 相对于基板。
[EN] HYDROSILYLATION REACTION CURABLE COMPOSITIONS AND METHODS FOR THEIR PREPARATION AND USE<br/>[FR] COMPOSITIONS DURCISSABLES PAR UNE RÉACTION D'HYDROSILYLATION ET LEURS PROCÉDÉS DE PRÉPARATION ET D'UTILISATION
申请人:DOW CORNING
公开号:WO2013000788A1
公开(公告)日:2013-01-03
A composition contains (A) a hydrosilylation reaction catalyst and (B) an aliphatically unsaturated compound having an average, per molecule, of one or more aliphatically unsaturated organic groups capable of undergoing hydrosilylation reaction. The composition is capable of reacting via hydrosilylation reaction to form a reaction product, such as a silane, a gum, a gel, a rubber, or a resin. Ingredient (A) contains a platinum-ligand complex that can be prepared by reacting a platinum precursor and a ligand.
in the synthesis of silyl-functionalized alkynes via silylative coupling of terminal alkynes/diynes with iodosilanes, we propose a new protocol allowing employment of various mono- and dichlorosilanes as reagents. The process is based on a sequence of two reactions occurring simultaneously: i.e., conversion of initial chlorosilane (SiR1nCl4–n) to the appropriate iodosilane via Cl/I nucleophilic substitution
A Convenient Synthesis of Alkynylsilanes by Silylation of Copper(I) Alkynides
作者:Hikaru Sugita、Yasuo Hatanaka、Tamejiro Hiyama
DOI:10.1246/cl.1996.379
日期:1996.5
Alkynylation of chlorosilanes with copper(I) alkynides takes place smoothly in the presence of triphenylphosphine, N, N, N′, N′-tetramethylethylenediamine, or zinc powder to give a variety of alkynylsilanes in good yields.
Symmetrical disiloxanes were prepared in high yields by air oxidation of mono, di, and trihydrosilanes under Lewis acid catalysis. (c) 2009 Elsevier Ltd. All rights reserved.