Herein, the photocatalytic hydrosilylation of alkynes and alkenes under continuousflow conditions is described. By using 0.2 mol % of the developed [Cu(dmp)(XantphosTEPD)]PF6 under blue LEDs irradiation, a large panel of alkenes and alkynes was hydrosilylated in good to excellent yields with a large functional group tolerance. The mechanism of the reaction was studied, and a plausible scenario was
在此,描述了在连续流动条件下炔烃和烯烃的光催化氢化硅烷化。通过在蓝光 LED 照射下使用 0.2 mol% 开发的 [Cu(dmp)(XantphosTEPD)]PF 6,大量烯烃和炔烃被氢化硅烷化,产率良好至极好,具有较大的官能团耐受性。研究了反应的机理,并提出了一个可能的假设。
The silyl-cupration and stannyl-cupration of allenes
作者:Ian Fleming、Michael Rowley、Purificacíon Cuadrado、Ana M. González-Nogal、Francisco J. Pulido
DOI:10.1016/0040-4020(89)80069-9
日期:1989.1
The stoichiometric silyl-cupration of allene 7, followed directly by treating the intermediate cuprate with a proton, with a range of carbon electrophiles, and with chlorine gives the vinylsilanes 8–13. Alternatively, when iodine is the electrophile, the product is the vinyl iodide 16. This can then be metallated and treated with a proton or a range of
Rh(I)/(III)‐N‐Heterocyclic Carbene Complexes: Effect of Steric Confinement Upon Immobilization on Regio‐ and Stereoselectivity in the Hydrosilylation of Alkynes
作者:Pradeep K. R. Panyam、Boshra Atwi、Felix Ziegler、Wolfgang Frey、Michal Nowakowski、Matthias Bauer、Michael R. Buchmeiser
DOI:10.1002/chem.202103099
日期:2021.12.6
Novel Rh(III) pentamethylcyclopentadienyl and Rh(I) complexes containing chelating N-heterocycliccarbenes have been prepared and used in the hydrosilylation of 1-alkynes. Selected catalysts were immobilized within the mesopores of SBA-15. The confinement effects either provided by the ligands or the mesoporous support have been studied and allow for hydrosilylation with β(Z)-selectivity of up to 100 %
Selective Hydrosilylation of 1-Alkynes Using Iridium Catalyst with Biphosphinine Ligand
作者:Yoshihiro Miyake、Eigo Isomura、Masahiko Iyoda
DOI:10.1246/cl.2006.836
日期:2006.8
The iridium-catalyzed hydrosilylation of alkynes in the presence of 4,4′,5,5′-tetramethylbiphosphinine (tmbp) has been explored. The hydrosilylation of alkynes in the presence of tmbp proceeds effectively to give β-(E)-vinylsilanes highly selectively in moderate to high yields, whereas a similar hydrosilylation in the absence of tmbp produces β-(Z)-vinylsilanes selectively. The stereoselectivity of these reactions suggests the importance of the electron-withdrawing properties of tmbp coordinated to iridium.
Hydrosilylation of alkynes catalyzed by ruthenium carbene complexes
作者:Sarah V. Maifeld、Michael N. Tran、Daesung Lee
DOI:10.1016/j.tetlet.2004.11.025
日期:2005.1
Hydrosilylation of terminal alkynes with a variety of silanes catalyzed by Cl2(PCy3)2RuCHPh (1) affords mainly the Z-isomer via trans addition in excellent yields. The presence of a hydroxyl group in close proximity to the triple bond was observed to exert a strong directing effect, resulting in the highly selective formation of the α-isomer. Intramolecular hydrosilylation of a homopropargylic silyl