Metal-free, radical 1,6-conjugated addition of cyclic ethers with <i>para</i>-quinone methides (<i>p</i>-QMs)
作者:Satish G. More、Gurunath Suryavanshi
DOI:10.1039/c9ob00127a
日期:——
An efficient method for metal-free C–C bond formation between p-quinone methides (p-QMs) and cyclic ethers via a radical pathway to afford substituted diarylmethanes and triarylmethanes or to effect the α-alkylation of the cyclic ethers has been developed. Also, the synthesis of 3,3′-disubstituted oxindoles with stereogenic quaternary carbon centers was successfully achieved under mild reaction conditions
Metal‐Free Aminocarbonylation of
<i>p</i>
‐Quinone Methides with Isocyanides: Synthesis of Sterically Hindered α‐Arylated Acetamides
作者:Sachin R. Shirsath、Devidas A. More、M. Muthukrishnan
DOI:10.1002/asia.202200642
日期:2022.10.17
The synthesis of stericallyhindered α-arylated acetamides generally requires a multistep reaction sequence and is also difficult to access due to steric constraints. This protocol allows the synthesis of stericallyhindered α-arylated acetamides in moderate to high yields via 1,6-addition of isocyanides to p-quinone methides in the presence of BF3.OEt2.