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Cu-Catalyzed Site-Selective and Enantioselective Ring Opening of Cyclic Diaryliodoniums with 1,2,3-Triazoles
A Cu-catalyzed enantioselective ring-opening/triazolylation reaction is reported. The reaction shows excellent chemoselectivity regarding the three different nitrogen atoms of 1,2,3-triazoles. The optically enriched axially chiral aryl iodides thus obtained were readily derivatized to different types of chiral phosphine ligands and their corresponding copper or palladium complexes.
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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
,Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis