ArticleNew route to enantiomers of cyclic β-hydroxyethers. The crystal structure of (S)-(+)-tetrahydrofurfuryl-O,O′-diacetyl-(2R,3R)-hydrogentartrate

Add time:08/14/2019    Source:sciencedirect.com

Title compounds 1–2 were readily resolved into their enantiomers by crystallizing their half esters formed with O,O′-diacetyl-(2R,3R)-tartaric acid. An intermolecular H-bond between the free carboxyl group and the ring oxygen, determined by single crstal X-ray study of (S)-(+)-tetrahydrofurfuryl-O,O′-diacetyl-(2R,3R)-hydrogentartrate, enhances the selectivity and the crystallizing ability itself.

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