Asymmetric Synthesis of α-Chiral Hydroxyalkylphosphines by a Catalytic Enantioselective Reduction of Acylphosphines
2014
Hayashi, Minoru | Ishitobi, Hiroyuki | Matsuura, Yutaka | Matsuura, Takashi | Watanabe, Yutaka
Enantioselective reduction of acylphosphines, after precomplexation with borane, proceeded smoothly in the presence of a chiral oxazaborolidine catalyst and catecholborane. α-Hydroxyalkylphosphine products were obtained as phosphine–borane complexes in good yield and enantioselectivity. One of the products of the enantioselective reduction was successfully applied as an optically active phosphine ligand for asymmetric catalysis after suitable derivatization.
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