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。
A Free-Radical-Promoted Stereospecific Decarboxylative Silylation of α,β-Unsaturated Acids with Silanes
作者:Lizhi Zhang、Zhaojia Hang、Zhong-Quan Liu
DOI:10.1002/anie.201509537
日期:2016.1.4
acrylic and propiolic acids with silanes was developed. This reaction represents the first example of decarboxylative CSi bond formation and provides an efficient and convenient approach to various synthetically useful alkenyl and alkynyl organosilicon compounds through the reaction of α,β‐unsaturated acids with silanes. Spin‐trapping and EPR experiments support a radicaladdition/elimination process
Copper-Catalyzed Cross-Coupling of Vinyliodonium Salts and Zinc-Based Silicon Nucleophiles
作者:Liangliang Zhang、Martin Oestreich
DOI:10.1021/acs.orglett.8b03714
日期:2018.12.21
A silylation of vinyliodonium salts using zinc-based silicon reagents as nucleophiles is reported. This cross-coupling is catalyzed by copper, and vinylsilanes are obtained in high yield likely following a Cu(I)/Cu(III) reaction mechanism. The procedure is operationally simple, neither air- nor moisture-sensitive, and tolerant of a range of functional groups. The new method is an addition to the still
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