Rhodium-Catalyzed Asymmetric 1,4-Addition of alpha,beta-Unsaturated Imino Esters Using Chiral Bicyclic Bridgehead Phosphoramidite Ligands
- Rhodium-Catalyzed Asymmetric 1,4-Addition of alpha,beta-Unsaturated Imino Esters Using Chiral Bicyclic Bridgehead Phosphoramidite Ligands
- 이안수; Hyunwoo Kim
- Issue Date
- Journal of the American Chemical Society
- VOL 137, NO 35-11253
- A chiral bicyclic bridgehead phosphoramidite (briphos) prepared from 1-aminoindane is a highly efficient and selective ligand for rhodium(I)-catalyzed asymmetric 1,4-addition of arylboronic acids to alpha,beta-unsaturated N,N-dimethyl-sulfamoyl imino esters at ambient temperature. This transformation provides a new class of chiral (Z)-gamma,gamma-diaryl-alpha,beta-dehydroamino esters with excellent yield and enantioselectivity.
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