17897-66-4Relevant academic research and scientific papers
Titanocene-Catalyzed Regioselective syn-Hydrosilation of Alkynes
Takahashi, Tamotsu,Bao, Fengyu,Gao, Guohua,Ogasawara, Masamichi
, p. 3479 - 3481 (2003)
Equation presented. The titanium catalyst, which was generated in situ from titanocene dichloride and 2 equiv of butyllithium, was found to catalyze hydrosilation of a variety of alkynes with excellent regio- and syn-selectivity.
METHOD OF PRODUCING ORGANIC SILANE COMPOUND AND CATALYST COMPOSITION FOR ORGANIC SILANE COMPOUND SYNTHESIS
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Paragraph 0033; 0038, (2017/02/24)
PROBLEM TO BE SOLVED: To provide a production method which makes it possible to produce an organic silane compound efficiently and inexpensively by improving a catalyst for use in hydrosilylation reaction of alkene and alkyne. SOLUTION: This invention provides a method of producing an organic silane compound, including reaction between alkene and/or alkyne and hydrosilane in the presence of a catalyst, wherein an iron-containing nanoparticle with a solvent coordinated on the surface is used as a catalyst so that an organic silane compound can be produced efficiently and inexpensively. COPYRIGHT: (C)2015,JPO&INPIT
Iron-copper cooperative catalysis in the reactions of alkyl grignard reagents: Exchange reaction with alkenes and carbometalation of alkynes
Shirakawa, Eiji,Ikeda, Daiji,Masui, Seiji,Yoshida, Masatoshi,Hayashi, Tamio
supporting information; experimental part, p. 272 - 279 (2012/03/07)
Iron-copper cooperative catalysis is shown to be effective for an alkene-Grignard exchange reaction and alkylmagnesiation of alkynes. The Grignard exchange between terminal alkenes (RCH=CH2) and cyclopentylmagnesium bromide was catalyzed by FeCl3 (2.5 mol %) and CuBr (5 mol %) in combination with PBu3 (10 mol %) to give RCH2CH 2MgBr in high yields. 1-Alkyl Grignard reagents add to alkynes in the presence of a catalyst system consisting of Fe(acac)3, CuBr, PBu3, and N,N,N″,N″-tetramethylethylenediamine to give β-alkylvinyl Grignard reagents. The exchange reaction and carbometalation take place on iron, whereas copper assists with the exchange of organic groups between organoiron and organomagnesium species through transmetalation with these species. Sequential reactions consisting of the alkene-Grignard exchange and the alkylmagnesiation of alkynes were successfully conducted by adding an alkyne to a mixture of the first reaction. Isomerization of Grignard reagents from 2-alkyl to 1-alkyl catalyzed by Fe-Cu also is applicable as the first 1-alkyl Grignard formation step.
Fe-Cu cooperative catalysis in the isomerization of alkyl Grignard reagents
Shirakawa, Eiji,Ikeda, Daiji,Yamaguchi, Shigeru,Hayashi, Tamio
, p. 1214 - 1216 (2008/12/21)
Alkyl Grignard reagents were found to be isomerized to more stable ones in high isomerization ratios (>99%) under cooperative catalysis by iron and copper, which promote isomerization of alkyl groups and transmetalation between Fe-Mg, respectively. The Ro
