Iridium-Catalyzed Preparation of Silylboranes by Silane Borylation and Their Use in the Catalytic Borylation of Arenes
作者:Timothy A. Boebel、John F. Hartwig
DOI:10.1021/om800696d
日期:2008.11.24
Silylboranes are versatile reagents for transition metal-catalyzed reactions of unsaturatedorganicmolecules. These reagents are typically prepared by the addition of a silyl lithium species to a boron electrophile. However, the need to generate anionic silane reagents limits the scope of silylboranes that can be readily obtained. Here, we describe the synthesis of trialkylsilylboranes by the borylation
Dicarbonylative benzannulation of 3-acetoxy-1,4-enynes with CO and silylboranes by Pd and Cu cooperative catalysis: one-step access to 3-hydroxyarylacylsilanes
作者:Li-Jun Wu、Liang-Feng Yang、Jin-Heng Li、Qiu-An Wang
DOI:10.1039/c9cc09077k
日期:——
3-acetoxy-1,4-enynes with CO and silylboranes is described. The method utilizes CO as both a one-carbon (C1) unit and an external addition functional reagent to achieve an unprecedented dicarbonylative benzannulation process, and represents a facile, efficient route to 3-hydroxyarylacylsilanes. Mechanistically, the silyl-Cu intermediate formed from CuF2 and silylboranes, and silyl-Pd intermediate generated
Silyl Radical Generation from Silylboronic Pinacol Esters through Substitution with Aminyl Radicals
作者:Hongyan Lan、Xiangyu Huo、Yinggang Jia、Dingyi Wang
DOI:10.1021/acs.orglett.3c04085
日期:2024.2.9
A novel strategy was developed to generate silyl radicals from silylboronic pinacol esters (SPEs) through nucleohomolytic substitution of boron with aminyl radicals. We successfully applied this strategy to obtain diverse organosilicon compounds using SPEs and N-nitrosamines under photoirradiation without any catalyst. The ability to access silyl radicals offers a new perspective for chemists to rapidly