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1 Introduction β-Amino alcohols are versatile synthetic intermediates for a wide range of biologically active natural and unnatural products. They can also serve as good chiral ligands for some asymmetric metal complex catalysts. The nucleophilic ring-op
1 Introduction β-Amino alcohols are versatile synthetic intermediates for a wide range of biologically active natural and unnatural products. They can serve as good chiral ligands for some asymmetric metal complex catalysts. The nucleophilic ring-op