Various fluorinated diphenylmethanols were enantioresolved by the methods of chiral camphorsultam-dichlorophthalic acid (CSDP acid) and/or 2-methoxy-2-(1-naphthyl)propionic acid (MalphaNP acid) yielding enantiopure alcohols. Their absolute configurations were unambiguously determined by X-ray crystallography of CSDP esters and/or by the (1)H NMR anisotropy method of MalphaNP esters for the first time.
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Naito et al. (2003) studied this question.
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