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Treatment of the diastereoisomeric N‐(1‐phenylethyl)‐1,2‐diphenyl‐2‐aminoethanols with benzaldehyde yields stereospecifically N‐(1‐phenylethyl)‐2,4,5‐triphenyloxazolidines with four chiral centers. The configurations of these oxazolidines are established through their ring‐opening reactions with methylmagnesium iodide and subsequent oxidation with lead tetracetate.
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Alcaide et al. (1982) studied this question.
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