Metal-free desilylative C–C bond formation by visible-light photoredox catalysis
作者:Mustafa Uygur、Tobias Danelzik、Olga García Mancheño
DOI:10.1039/c8cc10239b
日期:——
A novel metal-free desilylative C–C bond formation from simple organosilanes by visible-light acridinium photoredox catalysis is presented.
通过可见光吖啶光还原催化,实现了从简单有机硅烷中无金属参与的脱硅碳-碳键形成。
An Additive-Free, Base-Catalyzed Protodesilylation of Organosilanes
作者:Wubing Yao、Rongrong Li、Huajiang Jiang、Deman Han
DOI:10.1021/acs.joc.7b03139
日期:2018.2.16
We report an additive-free, base-catalyzed C–, N–, O–, and S–Si bond cleavage of various organosilanes in mild conditions. The novel catalyst system exhibits high efficiency and good functional group compatibility, providing the corresponding products in good to excellent yields with low catalyst loadings. Overall, this transition-metal-free process may offer a convenient and general alternative to
The electronic effect of XMe3 and CH2XMe3(X = Si, Ge, Sn, or Pb) substituents in organometallic sulphides. A kinetic and photoelectron spectroscopic study
作者:Francesco Paolo Colonna、Roberto Danieli、Giuseppe Distefano、Alfredo Ricci
DOI:10.1039/p29760000306
日期:——
For organometallicsulphides p-Me3XC6H4SMe (I), p-Me3XCH2C6H4 SMe (II), and PhSCH2XMe3(III)(X = Si, Ge. Sn, or Pb) the oxidation rates with perbenzoic acid have been measured spectrophotometrically at 25° and compared with the ionization energies obtained by u.v. photoelectron spectroscopy measurements. From the results obtained for sulphides (I), +I, (p→d)π and hyperconjugative contributions almost
对于有机金属硫化物p -Me 3 XC 6 H 4 SMe(I),p -Me 3 XCH 2 C 6 H 4 SMe(II)和PhSCH 2 XMe 3(III)(X = Si,Ge.Sn或Pb )已在25°分光光度法测量了过苯甲酸的氧化速率,并将其与通过uv光电子能谱测量获得的电离能进行了比较。从硫化物(I)+ I,(p → d)π的结果超共轭作用几乎抵消了;对于系列(II)和(III),CH 2 XMe 3基团的电子释放特征证实了C-金属超共轭的重要性。还研究了溶剂对标题化合物氧化速率的影响,并进行了详细讨论。