Rhodium-Catalyzed Alkylation of C–H Bonds in Aromatic Amides with α,β-Unsaturated Esters
作者:Kaname Shibata、Naoto Chatani
DOI:10.1021/ol502500c
日期:2014.10.3
carbonyl compounds by a rhodium-catalyzed reaction of aromaticamidescontaining an 8-aminoquinoline moiety is reported. The reaction is highly regioselective. The formation of C–C bonds occurs between the ortho C–H bonds in aromaticamides and the β-position of the acyclic α,β-unsaturated carbonyl compounds. The reaction is applicable to various acyclic α,β-unsaturated carbonyl compounds, such as
A ruthenium‐catalyzed ortho‐alkenylation of acylgermanes with electron‐deficient alkenes through direct C–H bond activation has been developed. With acylgermane as the directing group, this method provides a straightforward access to diverse acylgermanes derivatives with good functional group tolerance and site‐selectivity under mild reaction conditions.
Donor–Acceptor Complex Enables Alkoxyl Radical Generation for Metal‐Free C(sp
<sup>3</sup>
)–C(sp
<sup>3</sup>
) Cleavage and Allylation/Alkenylation
作者:Jing Zhang、Yang Li、Ruoyu Xu、Yiyun Chen
DOI:10.1002/anie.201707171
日期:2017.10.2
The alkoxyl radical is an essential and prevalent reactive intermediate for chemical and biological studies. Here we report the first donor–acceptor complex‐enabled alkoxyl radical generation under metal‐free reaction conditions induced by visible light. Hantzsch ester forms the key donor–acceptor complex with N‐alkoxyl derivatives, which is elucidated by a series of spectrometry and mechanistic experiments