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• W2022149831 abstract "Racemic 2-methoxy-2-(1-naphthyl)propionic acid (1, MαNP acid) was enantioresolved as its esters derived from various chiral alcohols. For example, a diastereomeric mixture of esters prepared from (±)-1 and (1R,3R,4S)-(−)-menthol was easily separated by HPLC on silica gel yielding esters (−)-2a and (−)-2b, the separation factor α=1.83 being unusually large. The 1H NMR chemical shift differences, Δδ=δ(R)–δ(S), between diastereomers 2a and 2b, are much larger than those of conventional chiral auxiliaries, e.g. Mosher’s MTPA and Trost’s MPA acids. This acid 1 is therefore very powerful for determining the absolute configuration of chiral alcohols by the 1H NMR anisotropy method. Solvolysis of the separated esters yielded enantiopure acids (S)-(+)-1 and (R)-(−)-1, which are useful for enantioresolution of racemic alcohols." @default.
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• W2022149831 date "2000-04-01" @default.
• W2022149831 modified "2023-09-30" @default.
• W2022149831 title "2-Methoxy-2-(1-naphthyl)propionic acid, a powerful chiral auxiliary for enantioresolution of alcohols and determination of their absolute configurations by the 1H NMR anisotropy method" @default.
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• W2022149831 doi "https://doi.org/10.1016/s0957-4166(00)00053-7" @default.
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