An efficient method for the dehydrogenative coupling of silanes with alcohols under photocatalysis was developed. The reaction proceeded in the presence of Ru(bpy)3Cl2 (0.5 mol%) under visible light irradiation in acetonitrile at room temperature. The developed methodology was also applicable for the synthesis of silanols using water as a coupling partner.
Bimetallic Nanoshells as Platforms for Metallo- and Biometallo-Catalytic Applications
作者:Camila M. Kisukuri、Dayvson J. Palmeira、Thenner S. Rodrigues、Pedro H. C. Camargo、Leandro H. Andrade
DOI:10.1002/cctc.201500812
日期:2016.1
The use of gold, silver, platinum and palladium for preparation of bimetallicnanoshells (AgAu, AgPt, and AgPdNSs, respectively) and their use for metallo‐ and bio‐metallo catalytic applications have been described. Bimetallicnanoshells (metallo‐catalysts) were employed for silane oxidation to silanols and hydrogen (H2) production. Fast and efficient oxidation of several silanes was observed after
Mechanistic Study of Arylsilane Oxidation through <sup>19</sup>F NMR Spectroscopy
作者:Elizabeth J. Rayment、Aroonroj Mekareeya、Nick Summerhill、Edward A. Anderson
DOI:10.1021/jacs.7b00357
日期:2017.5.3
arylsilanes to phenols has been investigated using 19FNMR spectroscopy. The formation of silanols in these reactions results from a rapid background equilibrium between silanol and alkoxysilane; the relative rates of reaction of these species was evaluated by modeling of concentration profiles obtained through 19FNMR spectroscopic reactionmonitoring. Combining these results with a study of initial
已使用 19 F NMR 光谱研究了芳基硅烷氧化成苯酚的机理。在这些反应中形成硅烷醇是由于硅烷醇和烷氧基硅烷之间的快速背景平衡;这些物质的相对反应速率通过对通过 19F NMR 光谱反应监测获得的浓度曲线进行建模来评估。将这些结果与苯酚形成的初始速率和取代基电子效应的研究相结合,已经形成了在限速芳基迁移之前快速可逆地形成五价过氧化物复合物的机理图。
Palladium-Catalyzed Silylation of Aryl Bromides Leading to Functionalized Aryldimethylsilanols
作者:Scott E. Denmark、Jeffrey M. Kallemeyn
DOI:10.1021/ol035288m
日期:2003.9.1
[GRAPHICS]A mild and general palladium-catalyzed insertion of 1,2-diethoxy-1,1,2,2-tetramethyldisilane into a variety of aryl bromides affords the aryldimethylsilyl ethers in high yields. Hydrolysis of the ethers under pH-optimized conditions results in the exclusive formation of the desired aryldimethylsilanols.