Chiral α-Amino Phosphonates via Rhodium-Catalyzed Asymmetric 1,4-Addition Reactions
2013
Lefevre, Nicolas | Brayer, Jean-Louis | Folléas, Benoît | Darses, Sylvain
A new approach for the preparation of enantioenriched α-amino phosphonates and derivatives is described. Indeed, the rhodium-catalyzed asymmetric 1,4-addition of potassium organotrifluoroborates to dehydroaminophosphonates afforded α-amino phosphonates in good yields and high enantioselectivities (up to 96%) using Difluorphos as a chiral ligand.
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