Design and synthesis of new bidentate phosphoramidite ligands for enantioselective copper-catalyzed conjugate addition of diethylzinc to enones
摘要:
Several thioaryl- and phosphino-phosphoramidite ligands have been synthesized from commercially available beta-aminoalcohols. This new family of bidentate ligands are highly active in the enantioselective copper-catalyzed conjugate addition of diethylzinc to both cyclic and acyclic enones showing moderate to good enantiomeric excesses of up to 81%. (c) 2006 Elsevier Ltd. All rights reserved.
Photocatalytic <i>N</i>‐Alkylation of <i>N</i>H‐Sulfoximines via Anti‐Markovnikov Hydroamination of Alkenes
作者:Cong Wang、Tiezheng Jia
DOI:10.1002/adsc.202300797
日期:2023.11.7
Herein, we present a mild photocatalytic anti-Markovnikov hydroamination of alkenes to construct N-alkylated sulfoximines with broad substrate tolerance on primary, secondary and tertiary alkyl substituents as well as a diverse range of sulfoximines. The mechanistic studies support the photocatalytic pathway, and demonstrate that the alkene radical cation rather than the iminium radical serves as the