Enantioselective Remote C(sp<sup>3</sup>)–H Cyanation via Dual Photoredox and Copper Catalysis
作者:Hui Chen、Weiwei Jin、Shouyun Yu
DOI:10.1021/acs.orglett.0c02008
日期:2020.8.7
The remote C(sp3)–H cyanation of carboxamides has been described by merging photoredox and copper catalysis in a site-selective and enantiocontrolled manner. The protocol is the integration of photoinduced and nitrogen-centered radical-mediated intermolecular hydrogen atom transfer with chiral copper-complex-catalyzed radical cyanation. This strategy gives enantio-enriched cyanated amides in high yields
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