Copper(I)-Catalyzed Allylic Substitution of Silyl Nucleophiles through SiSi Bond Activation
作者:Hajime Ito、Yuko Horita、Masaya Sawamura
DOI:10.1002/adsc.201100819
日期:2012.3.16
We report the first copper(I)‐catalyzed reaction between a disilane and allylic carbonates to produce allylsilanes. The silyl nucleophilic substitution proceeded primarily in a SN2 fashion whereas SN2′ products were also obtained through σ‐π‐σ isomerization of the copper(III) intermediate depending on the substrate’s steric bulk.
我们报告了乙硅烷与烯丙基碳酸酯之间的第一个铜(I)催化反应,生成烯丙基硅烷。甲硅烷基亲核取代主要以S N 2方式进行,而S N 2'产物也通过铜(III)中间体的σ-π-σ异构化而获得,具体取决于底物的空间体积。
Suzuki–Miyaura cross-couplings of secondary allylic boronic esters
作者:Ben W. Glasspoole、Kazem Ghozati、Jonathon W. Moir、Cathleen M. Crudden
DOI:10.1039/c2cc16076e
日期:——
Palladium-catalyzed cross-coupling reactions of secondary allylic boronic esters with iodoarenes were demonstrated under the conditions previously described for the coupling of benzylic substrates. The regioselectivity of the process was largely dictated by the pattern of olefin substitution.