Amidyl Radical Directed Remote Allylation of Unactivated sp
<sup>3</sup>
C−H Bonds by Organic Photoredox Catalysis
作者:Kui Wu、Lushun Wang、Sonivette Colón‐Rodríguez、Gerd‐Uwe Flechsig、Ting Wang
DOI:10.1002/anie.201811004
日期:2019.2.4
visible‐light‐mediated allylation of unactivated sp3 C−H bonds is reported. The remote allylation was directed by the amidyl radical, which was generated by photocatalytic fragmentation of a pre‐functionalized amide precursor. Both aromatic and aliphatic amide derivatives could successfully deliver the remote C−H allylation products in good yields. A variety of electron deficient allylsulfone systems could
The stereoselective dehydration of 5-(2-hydroxyalkyl)-3(2H)-furanones is accomplished conveniently by the treatment with Me3SiCl in acetonitrile to give 5-[(E)-1-alkenyl]-3(2H)-furanones.
Synthesis of monosaccharide analogues in an enantio‐ and diastereoselective manner has been investigated. Asymmetric benzoyloxylation and subsequent aldol reaction using two amine catalysts effectively give monosaccharide analogues with controlled three stereogenic centers.