A facile α-iodination reaction of unsaturated amides
摘要:
A novel and mild alpha-iodination of carboxamides was developed. Unsaturated amides could be converted to the alpha-iodoamides in moderate to good yields by treatment with I2 in the presence of s-collidine.
Enantioselective γ-borylation of unsaturated amides and stereoretentive Suzuki–Miyaura cross-coupling
作者:Gia L. Hoang、James M. Takacs
DOI:10.1039/c7sc01093a
日期:——
rhodium-catalyzed, directed catalytic asymmetric hydroboration of γ,δ-unsaturated amides affords a direct route to chiral acyclic secondary γ-borylated carbonyl derivatives in high enantiomeric purity. In contrast to a similar β-borylated amide derivative, the γ-borylated amide undergoes Suzuki–Miyaura cross-coupling with stereoretention. The utility of the boronicester products is further illustrated