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。
Diverse Fates of β-Silyl Radical under Manganese Catalysis: Hydrosilylation and Dehydrogenative Silylation of Alkenes
作者:Xiaoxu Yang、Congyang Wang
DOI:10.1002/cjoc.201800367
日期:2018.11
Manganese‐catalyzed hydrosilylation of alkenes has been underdeveloped for a long time. Herein, we describe a general, chemo‐ and regio‐ selective hydrosilylation of alkenes by using the Mn(CO)5Br catalyst with ample substrate scopes. Meanwhile, dehydrogenative silylation of aryl olefins can be selectively achieved upon the catalysis of dinuclear Mn2(CO)10. Mechanistic experiments revealed diverse
Rh(1,3-bis(2,4,6-trimethylphenyl)-3,4,5,6-tetrahydropyrimidin-2-ylidene)(COD) tetrafluoroborate, an unsymmetrical Rh-homoazallylcarbene: synthesis, X-ray structure and reactivity in carbonyl arylation and hydrosilylation reactions
作者:Nicolas Imlinger、Klaus Wurst、Michael R. Buchmeiser
DOI:10.1016/j.jorganchem.2004.11.057
日期:2005.10
The synthesis of novel Rh(1,3-bis(2,4,6-trimethylphenyl)-3,4,5,6-tetrahydropyrimidin-2-ylidene)(COD) tetrafluoroborate (1, COD = η4-1,5-cyclooctadiene) is described. The N-heterocyclic carbene acts as a bidentate ligand with the carbene coordinating to the Rh(I) center and an arene group acting as a homoazallyl ligand. 1 was used in various carbonyl arylation and hydrosilylation reactions allowing
Probing the catalytic potential of chloro nitrosyl rhenium(i) complexes
作者:Yanfeng Jiang、Olivier Blacque、Heinz Berke
DOI:10.1039/c0dt00842g
日期:——
afforded the Re(I) dichloride complex [ReCl2(NO)(CH3CN)3] (2). Subsequent ligand substitution reactions with PCy3, PiPr3 and P(p-tolyl)3 afforded the bisphosphine Re(I) complexes [ReCl2(NO)(PR3)2(CH3CN)] (3, R = Cy a, iPr b, p-tolyl c) in good yields. The acetonitrile ligand in 3 is labile, permitting its replacement with H2 (1 bar) to afford the dihydrogen Re(I) complexes [ReCl2(NO)(PR3)2(η2-H2)] (4