The chiral oxazaphospholidine (2) derived from (S)-(+)-prolinol reacts with benzyl bromide in a stereoselective Michaelis–Arbuzov reaction to give (3), an ideal precursor for the synthesis of the chiral hybrid phosphine–phosphine oxide ligand (5).
B. Faure, A. Archavlis and G. Buono, J. Chem. Soc., Chem. Commun., 1989, 805 DOI: 10.1039/C39890000805
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