Development of Binaphthyl-Based Chiral Dienes for Rhodium(I)-Catalyzed Asymmetric Arylation of N,N-Dimethylsulfamoyl-Protected Aldimines
摘要:
A variety of binaphthyl-based chiral dienes were synthesized and utilized as steering ligands for the enantioselective arylation of N,N-dimethylsultamoyl-protected aldimines with arylboronic acids, and moderate to good yields and up to 84% ee were achieved.
Chiral Bicyclic Bridgehead Phosphoramidite (Briphos) Ligands for Asymmetric Rhodium-Catalyzed 1,2- and 1,4-Addition
作者:Ansoo Lee、Hyunwoo Kim
DOI:10.1021/acs.joc.6b00033
日期:2016.5.6
A complementary solution for Rh-catalyzed enantioselective 1,2- and 1,4-arylation with two structurally related chiralligands is reported. A chiral bicyclic bridgehead phosphoramidite (briphos) ligandderived from 1-aminoindane was efficient for the 1,2-arylation of N-sulfonyl imines, while that derived from 1,2,3,4-tetrahydro-1-naphthylamine was efficient for 1,4-arylation of α,β-unsaturated cyclic