Cross‐dehydrogenativecoupling of various terminalalkynes and monohydrosilanes efficiently proceeded in the presence of gold supported on OMS‐2 (Au/OMS‐2) using O2 as a terminal oxidant, affording the corresponding alkynylsilanes in moderate to high yields (see picture). The observed catalysis was truly heterogeneous, and the catalyst could be reused at least ten times without a significant loss of
Direct C(<i>sp</i>)–H/Si–H Cross-Coupling via Copper Salts Photocatalysis
作者:Qi-Chao Gan、Zi-Qi Song、Chen-Ho Tung、Li-Zhu Wu
DOI:10.1021/acs.orglett.2c02022
日期:2022.7.22
cross-coupling by photocatalysis. In terms of cheap and readily available starting materials, a series of alkynylsilanes are prepared in good to excellent yields upon visible-light irradiation of CuCl and alkynes with silane. The large scale reaction with flow chemistry and late-stage functionalization of natural products shows the potential of the transformation in practical organic synthesis of the alkynylsilanes
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
Base-mediated one-pot synthesis of alkynylsilanes from terminal alkynes and chlorosilanes
作者:Jianyang Chen、Hongmei Fu、Huamei He、Shuting Liang、Xiaofeng Luo
DOI:10.1016/j.tet.2024.133823
日期:2024.2
An efficient one-pot method has been developed to synthesize alkynylsilanes from terminalalkynes by treatment with chlorosilanes and LiN(SiMe3)2. The reaction proceeded smoothly at room temperature, showing a broad substrate scope and good functional group tolerance. The practical application was demonstrated by gram-scale reaction.