Abstract
The enantiomeric purities of secondary alcohols can be easily analyzed by GC and HPLC through derivatization to the esters of 2,2-disubstituted cyclopropanecarboxylic acids 1, and by 1H NMR analysis of the esters of 2,2-diphenylcyclopropanecarboxylic acid ( 1b). In addition racemic 1,1′-bi-2-naphthol is easily resolved through derivatization to monoesters of 2,2-dimethylcyclopropanecarboxylic acid ( 1a), which are crystallized selectively and sequentially in high yields with high optical purities.
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