Rhodium‐Catalyzed Intermolecular Silylation of C
<sub>sp</sub>
−H by Silacyclobutanes
作者:Tao He、Bin Li、Lichuan Liu、Wenpeng Ma、Wei He
DOI:10.1002/chem.202100084
日期:2021.3.26
The signature reactivity of silacyclobutane (SCB) is their cycloaddition reactions with various π bonds. Recently, the first cases were disclosed where SCBs reacted with both Csp2−H and Csp3−H σ bonds in an intramolecular fashion. Herein, it is reported that SCB is also an efficient reagent for Csp−H bond silylation. Thus, rhodium‐catalyzed intermolecular reactions between SCBs and terminal alkynes
硅环丁烷(SCB)的特征反应性是它们与各种π键的环加成反应。最近,公开了第一种情况,其中SCB以分子内方式与C sp2- H和C sp3- Hσ键反应。在此,据报道SCB也是用于C sp -H键甲硅烷基化的有效试剂。因此,SCB和末端炔烃之间的铑催化的分子间反应产生了一系列对称且不对称的带有C sp -Si功能的四有机硅。初步研究表明,该反应不涉及环加成途径,而是直接激活C sp -H键。